effect being concentrated among teens of a minority sexual orientation. A study of nationwide data from across the United States from January 1999 to December 2015 revealed that the rate of attempted suicide among all students in grades 9–12 declined by 7% and the rate of attempted suicide among those of a minority sexual orientation in grades 9–12 declined by 14% in states which established same-sex marriage, resulting in approximately 134,000 fewer teens attempting suicide each year in the United States. The researchers took advantage of the gradual manner in which same-sex marriage was established in the United States (expanding from one state in 2004 to all fifty states in 2015) to compare the rate of attempted suicide among teens in each state over the time period studied. Once same-sex marriage was established in a particular state, the reduction in the rate of attempted suicide among teens in that state became permanent. No reduction in the rate of attempted suicide among teens occurred in a particular state until that state recognized same-sex marriage. The lead researcher of the study observed that "laws that have the greatest impact on gay adults may make gay kids feel more hopeful for the future". Economic impact on same-sex couples Until the Supreme Court's June 2013 ruling in United States v. Windsor required the Federal Government to treat lawfully married same-sex couples on an equal basis with lawfully married opposite-sex couples, same-sex married couples faced severe disadvantages. The Federal Government did not recognize those marriages for any purpose. According to a 1997 General Accounting Office study, at least 1,049 U.S. federal laws and regulations include references to marital status. A 2004 study by the Congressional Budget Office found 1,138 statutory provisions "in which marital status is a factor in determining or receiving 'benefits, rights, and privileges. Many of these laws govern property rights, benefits, and taxation. Same-sex couples whose marriages were not recognized by the Federal Government were ineligible for spousal and survivor Social Security benefits and were ineligible for the benefits of the spouse of a federal government employee. One study found that the difference in Social Security income for same-sex couples compared to opposite-sex married couples was per year. Compared to similarly situated opposite-sex married couples, same-sex couples faced the following financial and legal disadvantages: Legal costs associated with obtaining domestic partner documents to gain legal abilities granted automatically by legal marriage, including