Year	current US$
1970	25129465.1
1971	27312248.23
1972	31496614.46
1973	45795410.16
1974	38293247.22
1975	52878990.17
1976	75855484.01
1977	102375618
1978	68632919.31
1979	74751640.32
1980	82767341.61
1981	80939064.03
1982	137167846.7
1983	238071670.5
1984	235559921.3
1985	290195282
1986	337915771.5
1987	367125274.7
1988	485333740.2
1989	554538879.4
1990	262490658.877334
1991	359942396.634235
1992	319111607.623451
1993	245369933.463894
1994	216302062.981028
1995	317286477.589244
1996	406091303.438062
1997	384313304.855717
1998	503213026.829756
1999	484308456.154132
2000	538812671.448013
2001	578107476.292755
2002	507652303.048786
2003	567717314.725032
2004	660148512.929358
2005	728975390.251142
2006	930169752.526702
2007	1055652089.84896
2008	1205758488.97882
2009	1071467575.33418
2010	1160032062.19267
2011	1389946209.94135
2012	1386645912.71772
2013	1623542124.03595
2014	1590831470.97113
2015	2275887117.0832
2016	2674566146.79319
2017	3337510465.2697
2018	3439935426.15566
2019	3144696518.15744
2020	2937970538.69081
2021	3572590009.58044
2022	3665990948.27605
2023	3899378879.22927