Year	current US$
1990	525055564.263594
1991	584998607.761391
1992	612194509.182765
1993	609256921.095049
1994	623674578.649728
1995	664073414.821746
1996	700520476.695024
1997	707773295.162507
1998	757522381.863805
1999	790452364.30545
2000	811328028.086875
2001	876218867.347579
2002	878055831.23159
2003	942217671.534972
2004	998987069.329334
2005	1066757354.31688
2006	1115341904.82643
2007	1121296447.24188
2008	1206624751.4221
2009	1206055169.34934
2010	1292022321.51717
2011	1228631222.27193
2012	1321098478.15495
2013	1407124015.2928
2014	1339759450.14232
2015	1359269498.20227
2016	1424611292.66994
2017	1448041520.71199
2018	1468419368.77008
2019	1524316102.16701
2020	1484992174.56976
2021	1593047788.96466