Year	constant 2015 US$
1990	2820.8401030740233
1991	2764.0739934622334
1992	2107.29678414183
1993	1596.1326656631777
1994	1264.5271891937045
1995	1102.4978900740705
1996	1105.5872422942778
1997	1158.481657617604
1998	1262.2918871261254
1999	1343.8559386987813
2000	1480.8086907243637
2001	1614.848858134748
2002	1754.1352413299062
2003	1918.611036969531
2004	2077.8852704733913
2005	2631.8514527940824
2006	3501.164825006026
2007	4327.113604688481
2008	4693.077079681157
2009	5023.967290502802
2010	5215.204154294959
2011	5152.838502447441
2012	5194.9209166508335
2013	5426.095941559613
2014	5506.181696003186
2015	5500.503646284862
2016	5270.738165712003
2017	5229.7098898585955
2018	5262.368704733676
2019	5348.453188518231
2020	5083.560254457207
2021	5345.4398644583125
2022	5595.255786715627
2023	5674.483477137321