Year	constant 2010 US$
1990	5379.0744954462
1991	4725.06287818098
1992	4349.92881842094
1993	4422.4472912608
1994	4603.02235493765
1995	4899.85558937919
1996	5106.01811791406
1997	4872.43155333007
1998	4783.42080557675
1999	4772.89007812994
2000	4896.69766460677
2001	5224.61352763448
2002	5624.60311775493
2003	5797.95135216523
2004	6439.15335642109
2005	6781.49133819162
2006	7369.49247012029
2007	8020.19273210173
2008	8913.9797644699
2009	8492.61749193263
2010	8209.9194562169
2011	8415.99918522552
2012	8629.14303523025
2013	8965.64852504829
2014	9306.24338328295
2015	9712.14756944992
2016	10236.8621688399
2017	11016.7761004967
2018	11534.8586225446