求翻译：　　调查显示，去年美国博彩业从业人员达３６．６万人，纳税共计５２亿美元。去年美国１１个州的３６家赛马场营业增长最强劲，营业收入比上年增加了１６％，约达３６亿美元。是什么意思？

The survey shows that the U.S. gaming industry employees last year to 36.6 million, a total of $ 5.2 billion tax. 36 home racetrack of the 11 U.S. states last year, business growth in the most strong, operating income increased 16 percent last year, amounting to approximately $ 3.6 billion.

　　Surveys show that last year United States gaming industry in China amounted to 36. 60,000 people, taxes amounted to us $ 5.2 billion. Last year United States 11 36 racetrack business growth in the State's most powerful, operating income increased over the previous year to 16%