Year	current US$
1990	133535940.87664
1991	130270108.187724
1992	103014787.212592
1993	72493861.4973855
1994	44516804.8625305
1995	38370724.4751975
1996	35654757.2778199
1997	41555812.1838104
1998	47420045.1471806
1999	45087559.0688489
2000	40835544.7675847
2001	41724707.9689323
2002	42925385.2216799
2003	45808086.0806488
2004	57362331.1618334
2005	57467628.8630644
2006	65968993.3597553
2007	84213120.9001951
2008	81586727.6020682
2009	66558121.9033667
2010	70016695.7183742
2011	76360669.1813235
2012	93831545.9989959
2013	103441236.901101
2014	154212064.293816
2015	170386816.188852
2016	218701371.066109
2017	275763969.80726
2018	340071524.138813
2019	384137436.821997
2020	457586893.929318
2021	588083562.580547