Year	current US$
1990	354901990.860327
1991	409794867.505209
1992	733386802.163721
1993	977202251.645071
1994	1311251169.02394
1995	1308932576.57686
1996	964694745.781286
1997	1110345715.01251
1998	1587903553.54872
1999	1343344754.55613
2000	1288983470.00191
2001	1616435177.00156
2002	1316054046.75022
2003	1226634008.29833
2004	1283489975.38144
2005	1581903721.05299
2006	1724249639.09131
2007	1107874820.15801
2008	783261159.522829
2009	848641545.9433
2010	1133419465.12775
2011	1175900813.08289
2012	1028243400.17786
2013	448252467.815799
2014	754404268.687964
2015	915617708.191899
2016	1159186431.9221
2017	1405683873.18357
2018	1365356869.76689
2019	2029295103.81825
2020	2030743113.49606
2021	1516862525.14422