http://www.bloomberg.com/news/articles/2016-07-26/golden-years-redefined-as-older-americans-buck-trend-and-work

More seniors are working past the traditional retirement age as employee benefits change, jobs require less physical exertion and overall health improves. The percentage of people older than 65 in the workforce was 19.4% last month, compared with 15% in June 2006, Bureau of Labor Statistics data show.