Year	U.S. Dollars
2009-01-01	20214400000
2010-01-01	22583200000
2011-01-01	29233300000
2012-01-01	35164300000
2013-01-01	39197500000
2014-01-01	43524200000
2015-01-01	35799600000
2016-01-01	36180000000
2017-01-01	37926300000
2018-01-01	42353500000
2019-01-01	46401000000