Year	constant 2015 US$
1960	3332818.0730350805
1961	3432681.3572014924
1962	4006874.8349836865
1963	4630995.4201436015
1964	5055398.506381664
1965	5317531.691583901
1966	6216274.04084871
1967	6182572.109692375
1968	6389780.9420736395
1969	6668139.303497264
1970	7252318.202755003
1971	8325809.962547332
1972	10010942.798007872
1973	13618373.565736905
1974	17912349.6743172
1975	21669570.833590314
1976	27511368.895578716
1977	34339284.01209563
1978	39045174.62801126
1979	46472242.241293855
1980	54644144.299717635
1981	66209266.70822203
1982	77766924.9915
1983	92610095.3002051
1984	106327524.97253175
1985	117009295.82218432
1986	133944552.50588582
1987	139663441.91043842
1988	172970291.3861932
1989	203112125.03063828
1990	216533882.83600518
1991	264124410.62450016
1992	286671904.41913223
1993	315066503.2513626
1994	332280575.29334766
1995	363672012.1505488
1996	407641039.427247
1997	504897313.6671508
1998	711875408.863313
1999	763053542.4014581
2000	821596331.9462824
2001	834328465.4045968
2002	976378994.0985452
2003	1040039606.9735539
2004	1105822229.9990454
2005	1191226159.6317794
2006	1303804940.83791
2007	1190339224.0720322
2008	1335032484.0768912
2009	1445182372.9257045
2010	1580802242.4302576
2011	1656736873.8588426
2012	1686452071.9799333
2013	1668393327.9087696
2014	1674782557.954895
2015	1806542397.635037
2016	1776800263.315279
2017	1893779657.5517309
2018	1895643524.5969405
2019	1818505706.6835167
2020	1869034369.4732616
2021	1853618846.4620755
2022	1826971908.1048455
