Year	constant 2010 US$
1971	20985.616472987
1972	21736.8227537399
1973	22914.0873645093
1974	23699.9626700841
1975	23340.2403711664
1976	24234.5819051004
1977	24944.9259224708
1978	25855.3940761794
1979	26695.7569395078
1980	27075.0321426007
1981	27202.3314106775
1982	27633.1405019745
1983	27643.5402035299
1984	27844.118514368
1985	28278.8616629172
1986	28938.8520528814
1987	29619.2565812682
1988	30809.0213816828
1989	31883.7159731998
1990	32638.3999455562
1991	32769.6444463771
1992	33171.4226102203
1993	32851.3329723836
1994	33447.9022854521
1995	34032.401423175
1996	34569.1211421007
1997	35379.8047301063
1998	36547.6879740329
1999	37863.1682081089
2000	38915.8167084081
2001	39486.9919663408
2002	39350.3147474188
2003	39505.721357157
2004	40347.3195315212
2005	40839.9747424944
2006	41664.0151736233
2007	42407.9450283297
2008	42356.8285017447
2009	40983.5740885752
2010	41579.0250726489
2011	42419.7037628503
2012	42152.8818369388
2013	42203.348482966
2014	42376.6019362333
2015	42675.5212800688
2016	42960.8900211027
2017	44074.1836154435