Year	current US$
1970	2015955369.595537
1971	2435477031.80212
1972	3258584136.3973317
1973	4330163532.297628
1974	4873670086.819258
1975	5367654901.960784
1976	5454582228.116712
1977	6080618124.672604
1978	7019183394.1605835
1979	7573426229.508197
1980	10061009211.053265
1981	10558557003.25733
1982	10151036831.48335
1983	8507260224.393775
1984	6363218296.357162
1985	6325879515.237087
1986	9167387749.631416
1987	12617620606.2331
1988	15729026462.395544
1989	16439977081.741787
1990	21046865419.772186
1991	22693231580.407936
1992	26015139590.13959
1993	21539982545.81723
1994	22624111111.11111
1995	27500607668.83375
1996	29215129971.406292
1997	30421212121.21212
1998	33897118210.151382
1999	35170526860.04255
2000	33213072165.468307
2001	33297137790.174843
2002	34854230478.92751
2003	39258471099.54109
2004	44360995999.94413
2005	45618066974.3315
2006	47038785002.414055
2007	54134774730.22331
2008	60196535872.91405
2009	51873468818.894104
2010	48988944165.71676
2011	45151353642.80164
2012	34215799408.28087
2013	33402580402.86676
2014	34557933535.64184
2015	30940414581.720688
2016	31982152338.226536
2017	37152652906.890656
2018	42459381834.782715
2019	43452578855.537186
2020	43985746000.81258
2021	51614226512.87514
2022	51247189045.36207
2023	55655308565.210785