Year	constant 2015 US$
1980	43488355.78208069
1981	45169147.53496047
1982	48052574.76653598
1983	50369203.56116361
1984	52439509.42718893
1985	53635326.278377905
1986	54636812.23699762
1987	55531757.136079565
1988	57024184.29588984
1989	55210429.29972696
1990	58021408.61102384
1991	54890806.145267956
1992	59573498.796887025
1993	61364240.94721222
1994	58126245.09563687
1995	60224677.697903305
1996	59446774.49434063
1997	61842678.39771438
1998	62635914.899584755
1999	63841107.52275485
2000	70766642.83012265
2001	72417577.52166757
2002	74101130.81929144
2003	75660295.18648298
2004	77112671.48919876
2005	79300666.88876483
2006	81399679.19332908
2007	78899898.15916076
2008	90024783.79960243
2009	86603842.01176693
2010	90501014.93076396
2011	99460615.35421744
2012	120944108.36044425
2013	125902816.77199446
2014	126293892.74115467
2015	130378566.05511953
2016	133761449.00685976
2017	143000420.9074148
2018	170395014.88521478
2019	156037298.78221393
2020	133078388.54982889
2021	146247196.48831493
2022	148366721.1101083
2023	150537941.37443128