Year	constant 2010 US$
1970	8946.63702749409
1971	9509.13692168104
1972	10297.8684578658
1973	11551.3812770181
1974	11573.2125861595
1975	10428.9081018086
1976	10696.6476681584
1977	11153.8352314956
1978	11275.0862119449
1979	11767.2896744438
1980	12145.3439166899
1981	12087.0550459575
1982	12096.9973170149
1983	12057.4900452647
1984	11691.7857593885
1985	12062.2812023768
1986	12747.4768253352
1987	13686.183244173
1988	14828.4707298393
1989	15878.5851010506
1990	16642.2150017137
1991	17444.8389717697
1992	17728.1749705585
1993	17359.5684108622
1994	17430.9894810297
1995	18222.5929422834
1996	18710.3679446022
1997	19311.6998638494
1998	20103.5198473397
1999	20769.0897925214
2000	21111.9014198925
2001	21347.6446127892
2002	21446.0666308526
2003	21270.6416588607
2004	21551.708475923
2005	21668.2866023958
2006	21601.8317265367
2007	22092.4418164807
2008	21953.3372399029
2009	21313.5810507727
2010	21780.6383771441
2011	21736.40639802
2012	20839.43127747
2013	20942.1798593047
2014	21163.5157212575
2015	21401.6301847739
2016	21980.1194942887
2017	22679.5515645626
2018	23119.4510192224