Year	current US$
1970	17603.4151799334
1971	15145.2959998543
1972	17237.7016512131
1973	30968.3378799711
1974	34635.5551786488
1975	48272.2285714286
1976	39916.8
1977	71359.4195121951
1978	70680.2476547842
1979	77071.5061913696
1980	93316.1246511628
1981	86929.92
1982	193348.088888889
1983	65718.881960488
1984	40065.0893617021
1985	25423.2
1986	25100.7428571429
1987	25394.9142857143
1988	25100.7428571429
1989	25120.5428571429
1990	89296.8
1991	107290.610526316
1992	101229.600984769
1993	75992.1815116524
1994	93117.4483318341
1995	122136.995186023
1996	90616.3398092187
1997	126009.205854581
1998	109677.529195275
1999	94285.9948954769
2000	96820.078257212
2001	97288.6645768025
2002	87873.1767487685
2003	94323.291229836
2004	98522.1015757785
2005	97049.3829631371
2006	139560.040229999
2007	143984.772012325
2008	153002.146805392
2009	139171.328450046
2010	318076.95624327
2011	270822.258585717
2012	264268.150083191
2013	352796.290918215
2014	445083.137756157
2015	337278.667835214
2016	452141.765518818
2017	376739.755066768
2018	247217.610996052
2019	220521.658879685
2020	293503.204594785
2021	227129.626197087