Year	current US$
1990	139594740.37195
1991	138724215.503741
1992	158340024.038081
1993	176256835.4008
1994	198275505.867981
1995	253002187.276701
1996	267888198.654334
1997	314069225.946965
1998	329543635.048096
1999	356972760.974233
2000	401858883.735549
2001	500308358.808872
2002	552790265.947719
2003	601598819.212958
2004	673566182.305629
2005	761038893.005731
2006	880404056.46795
2007	978365939.757856
2008	1115913265.01726
2009	1235882095.06184
2010	1445487562.74022
2011	1623260769.4964
2012	1801752167.0002
2013	1958918345.29981
2014	2149204478.21316
2015	2510249885.15522
2016	2671101308.97179
2017	2968672007.3769
2018	3269466204.35554
2019	3700279184.10966
2020	3963991266.37023
2021	4527926058.98953