Year	current US$
1970	11019999.980926521
1992	72450000.76293951
1993	143239999.7711182
1994	236239997.8637693
1995	248269996.64306626
1996	171610002.5177001
1997	186740001.6784665
1998	222000000
1999	203000000
2000	221520004.2724615
2001	279600000.3814698
2002	312190008.16345245
2003	341360012.05444336
2004	359140012.74108857
2005	257859992.980957
2006	280209999.0844728
2007	289510000.2288817
2008	357750007.62939423
2009	354780002.5939938
2010	412029991.1499024
2011	473710006.71386695
2012	507184204.101563
2013	415637443.5424804
2014	506500337.600708
2015	590676212.3107917
2016	562173061.3708495
2017	674347431.1828614
2018	582582355.4992678
2019	595217563.6291504
2020	596746150.9704597
2021	560208301.5441892
2022	641521343.2312016