Year	constant 2010 US$
1970	4634.6618057659
1971	4862.47799166255
1972	5103.94416845769
1973	5455.13962595084
1974	5701.02025267065
1975	5810.57191947193
1976	6015.4251564056
1977	6144.42433654095
1978	6202.80887719685
1979	6453.46036308035
1980	6675.88402480067
1981	6487.90250880878
1982	6215.0114193012
1983	5919.20731734665
1984	6016.21936114829
1985	6138.60738427873
1986	6314.85002536821
1987	6419.91421614791
1988	6354.0176796211
1989	6543.84062692669
1990	6260.70867628569
1991	6390.69466608967
1992	6421.68227565893
1993	6537.04137013236
1994	6681.39704868282
1995	6694.50257230807
1996	6779.60685090656
1997	7002.7115397184
1998	6998.432347009
1999	6876.15407517849
2000	7100.94018669141
2001	7040.40136926966
2002	6929.50306264794
2003	6937.68693893494
2004	7236.92147752537
2005	7456.81624653735
2006	7843.15925548723
2007	8221.39699962757
2008	8442.03730669665
2009	8170.35082880151
2010	8529.45069626886
2011	8793.55311269542
2012	8952.32691471363
2013	9119.5826086368
2014	9114.50475690258
2015	9021.03352774946
2016	8882.48123170811
2017	8950.51457661433
2018	8978.67642228661