Year	constant 2015 US$
1995	1696.8984351405595
1996	1514.855364768818
1997	1743.469702476104
1998	1505.1875477207998
1999	1352.6328716344447
2000	1284.8969814728073
2001	1396.8284727459086
2002	1511.00475844736
2003	1337.94174269574
2004	1665.3017511262526
2005	1691.880773294488
2006	1533.9033933097865
2007	945.6113703981307
2008	1313.6694125944248
2009	1140.1292188501202
2010	1097.3133678232207
2011	1134.7716853130853
2012	876.244852380259
2013	1250.8787865595805
2014	1224.5931899174157
2015	1049.2245108625045
2016	1248.2914808766586
2017	1393.4839029745667
2018	1378.9290198462927
2019	1387.7458493071792
2020	992.1911778910442
2021	1471.4077852097762
2022	1213.2802546946207