Year	constant 2010 US$
1990	5947.49285562617
1991	5510.66193539906
1992	5631.95523394047
1993	5827.64781228422
1994	6123.15941286708
1995	6539.95056132948
1996	6930.7731515719
1997	7373.62829868215
1998	7711.14789819515
1999	8069.77195931463
2000	8526.30368477933
2001	8635.07307359182
2002	8815.45901952615
2003	9135.66041218787
2004	9610.45594287589
2005	9950.5852456949
2006	10572.1927256157
2007	11322.065805786
2008	11801.6084368762
2009	12126.2156068515
2010	12599.5335818707
2011	13224.5778043097
2012	13437.2486546439
2013	13632.5066660986
2014	14095.4399166438
2015	14646.3133391002
2016	15101.3610626481
2017	15826.3848754141
2018	16639.7279816121