Year	current US$
1980	5548609.22576979
1981	6301071.44339716
1982	6383210.20757702
1983	7679336.50969903
1984	6677951.99689676
1985	7061598.93007452
1986	10349795.6369671
1987	17858960.313925
1988	20072450.28926
1989	17938469.4897074
1990	15004246.3057697
1991	13356567.5162787
1992	14534209.2100911
1993	13755366.7072599
1994	14870174.9657043
1995	18740014.7307923
1996	19635080.3295618
1997	21026872.2659661
1998	21215165.5256484
1999	27611495.9179272
2000	31119988.243784
2001	31792203.5362368
2002	33802482.2423666
2003	43577686.7291471
2004	49556418.8124382
2005	60465402.9106473
2006	67724108.634765
2007	93928111.6905722
2008	101388397.432549
2009	100629104.58943
2010	124612055.861922
2011	139946977.214221
2012	137130674.473082
2013	136690030.727722
2014	149019964.406023
2015	164042497.294923
2016	171653081.79997
2017	195553926.100272
2018	194652824.927217
2019	29521075.2097742
2020	26702423.3016212
2021	39009307.0882421