Year	current US$
1994	319843511.548467
1995	370258436.220362
1996	415006250.418621
1997	430125063.810607
1998	440457373.879197
1999	467213181.791407
2000	589865392.218016
2001	639512262.757637
2002	641771408.437535
2003	621605556.482496
2004	626395178.31749
2005	677259005.772883
2006	734421382.502292
2007	790377642.088313
2008	937475854.783619
2009	1006533085.56504
2010	1225368560.3294
2011	1319656797.58561
2012	1282406949.91055
2013	1329928141.25464
2014	1530677134.03366
2015	1391641620.02504
2016	1693213641.11086
2017	1829023521.81304
2018	1973760374.48855
2019	1873874714.49193
2020	1695884706.81526
2021	1966158396.26873