Year	constant 2010 US$
1994	552.145684253004
1995	593.360551672763
1996	591.221794154711
1997	577.566729443104
1998	577.502991758082
1999	576.203066724382
2000	577.590197063376
2001	564.03342475501
2002	555.888403263075
2003	626.71992197362
2004	645.880473505542
2005	760.484777788237
2006	818.864295949571
2007	887.188145258913
2008	970.507414774163
2009	1064.5382602637
2010	1168.04186204625
2011	1303.99368739296
2012	1493.84654549259
2013	1522.34078639061
2014	1537.8310250576
2015	1552.44378790521
2016	1570.31657693512
2017	1588.22986493545
2018	1599.40395937365