Year	constant 2015 US$
1992	5333.331757821194
1993	4293.542994506772
1994	3902.2277467187496
1995	3308.9090815937852
1996	2908.329307627456
1997	2735.9623454532607
1998	2559.7054955762665
1999	2933.3245153334924
2000	3013.620192846168
2001	3291.005113843824
2002	3548.333422827277
2003	3753.035266227869
2004	4103.323147612224
2005	4333.35197030358
2006	5149.999738738121
2007	5871.543493414118
2008	6657.982191016883
2009	6898.441596509513
2010	7610.236958357464
2011	7975.087297114742
2012	8501.157333336867
2013	9028.046047239526
2014	9539.6576066642
2015	9737.019914204478
2016	9628.826283053424
2017	9880.021814040221
2018	10188.377943177931
2019	10217.394991495377
2020	10182.484521980228
2021	10936.558864675017
2022	11884.937322170059