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What strange things do people search for on Google? How does income tax affect migration patterns? What features are popular in which type of homes?

At the City-Data Blog, our writers utilize data to answer questions you never knew you had. From silly, light-hearted investigations to powerful economic examinations, we cover a range of topics that anyone can enjoy! Our writers, many of them Ph.D. graduates or candidates, create easy-to-read articles on a wide variety of topics.

Who are the U.S. users of Instagram?

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Pavel Prikhodko, Ph.D. Machine Learning

According to information about Instagram users published at Statista.com, there were approximately 1000 million active global users of the photo-sharing network in June 2018. If we look at users in the United States, we see that in 2018 the number of monthly active users reached 104.7 million. In comparison, in 2016 and 2017 the number of U.S. users was 69.1 million and 92.6 million respectively.

Future projections show that in 2019 the number of monthly active users will grow to 113.3 million. This number is expected to increase further in 2020, reaching 120.3 million active users in the U.S. According to the forecast, in 2021 and 2022 the overall number of Instagram users in the country will be around 125.7 million and 130.7 million users.

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Protective measures implemented by online harassment victims

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Pavel Prikhodko, Ph.D. Machine Learning

Online harassment is a big problem in the United States nowadays, and problems of this nature can be difficult to control. According to the statistics on the most common types of online harassment experienced by internet users in the U.S., 23 percent of female internet users had experienced harassment with offensive names as of January 2017. About 21 percent of American female internet users suffered from purposeful embarrassment, while 8 percent experienced physical threats and sexual harassment. Additionally, 6 percent suffered from stalking and 7 percent from sustained harassment.

As a result, overall around 37 percent of female U.S. internet users said that they experienced online harassment. In comparison, the overall percentage of male internet users in the country who experienced online harassment was even higher — 44 percent of men said they had been harassed online. If we look at the most common types of harassment that men experienced, 30 percent were called offensive names, 24 percent experienced purposeful embarrassment, 12 percent experienced physical threats, 8 percent experienced stalking and sustained harassment and 4 percent experienced sexual harassment online.

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Many victims of online harassment take steps to protect themselves. As of July 2016, 43 percent of the people surveyed changed their contact information. About 36 percent stated that they changed their email address or telephone number. Approximately 21 percent of online harassment victims created a new social media profile under a different name.

Many people (26 percent of the respondents) asked a friend or family member for help, while 11 percent got a restraining order or protection order. About 27 percent of people reported or flagged content that was posted about someone on a website without person’s permission. About 26 percent disconnected from online networks or devices, and 21 percent stopped using social media.

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Commercial and tribal casinos

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Pavel Prikhodko, Ph.D. Machine Learning

According to the American Gaming Association, there were a total of 460 commercial casinos in the United States in 2017. This number includes both land-based and riverboat casinos. The number of commercial casinos in the country in 2016 was the highest in the last decade (524) — in comparison, during 2010 there were only 438 casinos. In comparison, 2005 saw only 455 casinos operating.

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The size of the green building market

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Pavel Prikhodko, Ph.D. Machine Learning

The U.S. green building market is growing every year. As we can see on the chart, in 2005 the size of the green building market in the U.S. amounted to just $3 billion. By 2008, this number had rapidly risen to $25 billion — by 2010, to $48 billion. In 2011 and 2012, the non-residential green building market was valued at about $61 billion and $63 billion respectively. In 2013, the market reached approximately $69 billion. The following year in 2014, it spiked to $81 billion.

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Are Teslas the safest cars on the road?

Andrey Kamenov

Andrey Kamenov, Ph.D. Probability and Statistics

Last year, Tesla CEO Elon Musk said that the brand’s fatality rate is “four times better than average.” As NHTSA has released the data for roadside fatalities in 2017, we can finally put this claim to the test, and it appears that Mr. Musk was not far from being correct. As the chart below shows, Tesla’s cars appear much safer compared to other luxury makes — in fact, there was only a single fatality in the entire year.

The main challenge is in estimating the total number of miles traveled by each make. The National Household Travel Survey can provide a rough estimate for the months when it was held. However, this estimate doesn’t take into account the changes in the fleet numbers that occur over the course of the survey. This is especially important for Jaguar, which significantly increased its U.S. sales in 2016 — but above all, it’s a deal-breaker for Tesla, which continued to demonstrate exponential growth in sales until recently.

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The participants in outdoor and indoor soccer

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Pavel Prikhodko, Ph.D. Machine Learning

In 2012, the Census Bureau reported that soccer was the third most played team sport in the United States, behind only basketball and baseball. Now soccer is the fastest-growing sport in the whole country; the popularity of the sport began growing especially rapidly after the U.S. hosted the 1994 FIFA World Cup.

In 2014, the number of participants in outdoor soccer aged six years or older amounted to approximately 12.59 million people. In 2015 and 2016, the number of participants in outdoor soccer amounted to 12.65 million and 11.93 million people respectively.

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The statistics on single-mother families

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Pavel Prikhodko, Ph.D. Machine Learning

The U.S. Census Bureau published some statistics on the number of families with a single mother in the United States from 2011 to 2017. There were 15.678 million families with a female parent with no husband in the country in 2011. In 2012 and 2013, the numbers of families with a single mother approximated to 15.489 million and 15.195 million respectively. The number of these families decreased to 15.553 million in 2014.

In 2015, there were around 15.630 million families with a single mother in the country. In 2016 and 2017, there were 15.581 million and 15.425 million families with a female parent only.

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Here’s how Ford and GM are losing the car market

Andrey Kamenov

Andrey Kamenov, Ph.D. Probability and Statistics

American car manufacturers’ shares of the U.S. car market are shrinking as more Americans than ever make the switch to foreign cars. Japanese makes are the most popular, with Korean and German manufacturers also gaining market share.

This video below shows how the popularity of different car manufacturers has changed since 1961.

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Hydropower in the U.S.

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Pavel Prikhodko, Ph.D. Machine Learning

According to information published at Statista.com, China is responsible for the largest share of hydropower consumption in the world — in 2017, China accounted for approximately 28.5 percent of the world’s hydropower consumption. Canada took second place with 9.8 percent, while Brazil’s consumption amounted to 9.1 percent. The United States came in fourth, just ahead of Russia; the U.S. accounted for 7.3 percent of the world’s hydropower consumption while Russia consumed 4.5 percent.

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What are the most popular types of destinations for American campers?

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Pavel Prikhodko, Ph.D. Machine Learning

Camping is a huge part of American culture. Many people in the country are enthusiastic about camping and seek the positive health impacts of time spent outdoors.

This type of recreational activity attracts more than 40 million participants each year in the U.S. The statistics show that the number of campers remained relatively stable from 2012 to 2016, never dipping below 40 million people.

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