Year	constant 2010 US$
1991	3196.05469771508
1992	3564.99125486025
1993	3567.35430112744
1994	3314.90101599565
1995	3545.41392624536
1996	3614.51258090825
1997	3504.0960479622
1998	4158.77432061539
1999	3876.7088276859
2000	4318.85963463553
2001	5190.09812710877
2002	4892.10184366057
2003	5533.25655912434
2004	5152.42411937723
2005	5644.93372768899
2006	5791.45155169282
2007	6309.57483867799
2008	6038.79513638345
2009	6598.05411396694
2010	7165.96378527709
2011	7554.98305592835
2012	8162.6019755631
2013	8472.28599180891
2014	8315.92007491636
2015	9174.41840578636
2016	10577.784590148
2017	10109.9561525877
2018	10689.375709696