Year	current US$
1960	11380000
1961	13140000
1962	16610000
1963	31590000
1964	38610000
1965	56940000
1966	57230000
1967	31280000
1968	47650000
1969	43720000
1970	48590000
1971	58105439.9913093
1972	80113162.1592239
1973	116258232.10916
1974	104491229.255964
1975	121589909.86555
1976	146051555.348528
1977	148329466.503789
1978	50774133.7784389
1979	146616346.642814
1980	64520000
1981	111429837.279221
1982	171170734.560324
1987	17414186.6106768
1988	38100000
1989	115800000
1990	106628453.144784
1991	134128608.619777
1992	130482500.309376
1993	55043953.8710167
1994	141007983.90664
1995	136202424.456838
1996	197324475.433975
1997	377939004.144899
1998	350405885.541702
1999	509713757.787291
2000	488462847.062073
2001	379930152.96915
2002	448133642.760811
2003	502061661.819927
2004	668198634.906633
2005	727807750.907584
2006	921891810.938807
2007	1103322447.10909
2008	1140842519.60378
2009	1573082251.39172
2010	1798981293.19797
2011	1892248423.80235
2012	1887214938.20452
2013	1992960773.02599
2014	2276176780.7117
2015	2492262791.93881
2016	2447771381.81086
2017	2757785586.66498
2018	2261143360.12993
2019	2397444668.92872
2020	3211903361.95717
2021	4046556203.71439
2022	4404430742.32312
2023	5446998877.80189