Year	current US$
2001	53032189.492348485
2002	59913592.43865069
2003	73031777.3054275
2004	83873957.26498143
2005	103353352.9646324
2006	104742155.43011394
2007	107675687.41548474
2008	128599933.50210497
2009	131427152.94464886
2010	122714485.3247542
2011	155974734.1565505
2012	162212682.76229307
2013	189507281.39533222
2014	212622604.59332943
2015	192458036.37670797
2016	232260298.3597659
2017	260903669.47881192
2018	314578453.79206455
2019	346132011.82244706
2020	354009675.1189891
2021	395688274.09232974
2022	428776527.45225525