Year	constant 2010 US$
1976	1694.34171386162
1977	1767.81722797325
1978	1794.62237279791
1979	1780.14144427945
1980	1652.59608428236
1981	1578.250132131
1982	1614.8121720952
1983	1631.25507016041
1984	1686.95965197707
1985	1758.55426769182
1986	1867.20033606898
1987	2218.35013758264
1988	2392.54975718956
1989	2545.30124357365
1990	2653.58211786567
1991	2757.63264463988
1992	2852.5509170397
1993	2969.58370862888
1994	3099.44319307119
1995	3219.89599869955
1996	3344.21898095971
1997	3470.88196857747
1998	3646.17777486128
1999	3746.40607580301
2000	3854.30298762974
2001	3937.32344760225
2002	4039.38528988824
2003	4198.65850471241
2004	4520.02301228736
2005	4817.84157578331
2006	5079.9395149365
2007	5282.48336706846
2008	5616.52280079719
2009	5718.71773964352
2010	5855.5345266607
2011	5992.5883500153
2012	6139.78445371763
2013	6287.89710902408
2014	6441.59541356023
2015	6617.79304324335
2016	6808.78303578236
2017	7022.37448092478
2018	7252.2020719556