Year	current US$
1971	17899999.62
1972	22579916
1973	22540000.92
1974	83123534.7699
1975	200435029.95009997
1976	248734344.66320002
1977	329723044.5403
1978	441087784.60230005
1979	618867603.9558
1980	957524857.6135999
1981	1021521644.4405
1982	661016622.0353999
1983	811262011.4706
1984	746846613.6439999
1985	810563136.8969
1986	827797372.0151
1987	916140344.8877
1988	1075145398.5535
1989	1275132822.9957001
1990	866832120.5626999
1991	838074883.6921
1992	1095631046.701
1993	931690899.1906999
1994	931406176.4848001
1995	1355983221.362373
1996	1299934014.5617197
1997	1563293076.5183125
1998	2304311086.7661066
1999	2859558589.9745817
2000	3235545128.527987
2001	3743292761.376363
2002	4562464326.095668
2003	5587706800.5668125
2004	6748466334.032634
2005	7399212472.682551
2006	9060600052.442804
2007	11194526353.872543
2008	13305753804.980791
2009	12527615786.982794
2010	14404617595.156956
2011	18305065967.352352
2012	18627767893.397205
2013	19544673718.032295
2014	21453422766.142467
2015	23888804173.601517
2016	21840987633.372105
2017	24442416160.78264
2018	29089886643.912342
2019	31930971670.09865
2020	31854476668.546604
2021	37366880200.3716
2022	41605468188.60437