Year	current US$
1980	13601537.3238353
1981	15181932.1746097
1982	16482610.5883549
1983	17513583.8552747
1984	18604526.4117624
1985	19571104.788594
1986	20414465.6297467
1987	22540978.5979466
1988	19788578.1056032
1989	17356797.2532044
1990	24046327.3759844
1991	30057773.6414189
1992	32909009.4145701
1993	31220839.0240983
1994	36659208.6688539
1995	41290759.7372047
1996	42160265.3012084
1997	43725378.8704332
1998	45714936.0149028
1999	43922640.8937029
2000	174463522.554062
2001	219378623.804174
2002	216455824.879698
2003	277201164.857911
2004	292437363.542862
2005	291761939.676767
2006	324063646.515316
2007	306430317.765542
2008	176737283.949836
2009	172934179.768964
2010	165083704.442277
2011	125758480.309647
2012	82828303.87474
2013	44324299.7902397
2014	98493858.7252083
2015	102091009.320268
2016	87556868.5581331
2017	91227560.135005
2018	95522690.4262889
2019	99424117.8799873
2020	96214487.269231
2021	108326527.080523