Year	current US$
1995	1018586633.275943
1996	1129602281.730312
1997	1315057433.541188
1998	1499304017.1929245
1999	1662549145.9877536
2000	1627870548.2488549
2001	1731681694.5756404
2002	2022014199.7221792
2003	2419677637.1308017
2004	2938995021.2059746
2005	3152529645.5623474
2006	3578576856.4841475
2007	4369438463.939556
2008	4356926719.684687
2009	3833228179.8793926
2010	5981932355.654309
2011	6691838863.333767
2012	6817825532.701364
2013	7202019507.207724
2014	7655177463.676304
2015	6826496268.400186
2016	6105448845.17859
2017	6365336425.659962
2018	7111610978.58397
2019	6961139582.229768
2020	6534625641.0256405
2021	6828337218.818126