Year	constant 2015 US$
1971	240101362.3423174
1972	227611480.45312002
1973	249797453.97050032
1974	249797453.97050032
1975	238786631.8227859
1976	232870383.18246207
1977	188662823.41600475
1978	219065790.12251714
1979	210027063.75409997
1980	228162001.72800222
1981	229254908.11412233
1982	201645712.3198405
1983	186362020.8208447
1984	225803752.59334216
1985	223502998.37014198
1986	263930715.14874026
1987	239937042.79475796
1988	226789795.6457948
1989	270011312.3597995
1990	263692173.6660099
1991	283180965.40055823
1992	231307533.53215295
1993	214956979.1102122
1994	224820060.41813752
1995	220415957.93982378
1996	250796325.26670128
1997	255411397.2106394
1998	255015820.9975007
1999	277405537.209706
2000	279568025.0229138
2001	274544664.7147923
2002	283832051.9799373
2003	307902229.4255946
2004	268283020.9324626
2005	322161431.838461
2006	310606541.2353064
2007	301010637.61033374
2008	327966773.2492752
2009	354911589.8496153
2010	311169378.01116264
2011	329138932.254389
2012	372059614.0757878
2013	393950886.2650693
2014	366034064.1550207
2015	380088653.1777849
2016	348132046.84211594
2017	333186688.1789901
2018	352743423.16832274
2019	355884794.9839276
2020	329036954.4886648
2021	344320336.4071176
2022	361816280.79159945
2023	352796727.9021148