Year	current US$
1990	523406975.641813
1991	413444059.949398
1992	600467555.50234
1993	1473816060.45108
1994	1071420128.21784
1995	1130715673.43272
1996	1275213526.92504
1997	1437867985.28984
1998	1311649628.01202
1999	1229549985.16106
2000	1070084905.26145
2001	1131743044.64135
2002	1064144620.29607
2003	1088549942.21238
2004	1447282166.79216
2005	1023274552.26051
2006	1252399686.80031
2007	1077398758.39477
2008	142852808.577386
2009	989947439.953449
2010	1243057770.86346
2011	679542487.676416
2012	1094057118.60325
2013	1136141941.66432
2014	1396929749.16084
2015	1964667459.54618
2016	2325490569.2676
2017	2533031098.74939
2018	2775877152.89253
2019	2850519368.58083
2020	3137301571.70464
2021	4421345972.24987