Year	constant 2011 international $
1993	2223.96076198663
1994	1757.99545068303
1995	1634.23579245286
1996	1727.76393152046
1997	1846.41260608979
1998	1843.35038713189
1999	1858.95376830274
2000	1931.57592680215
2001	2055.52793430112
2002	2042.59509895001
2003	2169.13251601187
2004	2264.55781830686
2005	2257.86290318052
2006	2342.99790092923
2007	2526.61912677128
2008	2649.18889935771
2009	2699.84396622528
2010	2601.46495812336
2011	2610.053585442
2012	2760.826028038
2013	2923.25371426296
2014	3021.3757570054
2015	3081.74084138566
2016	3108.06469267402
2017	3199.23896700639
2018	3316.79326981409