Year	current US$
1976	720442.6527
1977	517298.75800000003
1978	266491.8005
1979	195129.6926
1980	392002.4037
1981	223066.7025
1982	133171.5137
1983	162511.2742
1984	196470.6928
1985	415305.5549
1996	790506.627107363
1997	1714249.52766601
1998	2557265.56639443
1999	3704857.23006327
2000	4378216.6851099
2001	3699706.70815673
2002	5734840.98605732
2003	7068562.16197178
2004	7743207.69949113
2005	5457649.18951444
2006	3322209.50838785
2007	2809832.24204278
2008	14330657.1150535
2009	7791556.3682341
2010	9418584.30684694
2011	11612731.7063982
2012	11741740.2571771
2013	19553597.1403801
2014	32521361.4348432
2015	32102746.7155943
2016	41213540.689277
2017	46838244.5116133
2018	56932184.6211527
2019	82792588.3259286
2020	94827814.1836617
2021	100464837.018003
2022	135240485.625238