Year	constant 2015 US$
1995	3785.8827576326503
1996	3923.8500503145506
1997	3852.6057436968445
1998	3611.2181730387892
1999	3487.8447867688296
2000	3405.843856469503
2001	3894.82009395809
2002	4393.722936635415
2003	4642.356563130768
2004	5845.692925998001
2005	5683.782948595677
2006	5861.56446598
2007	5449.7885981949175
2008	6425.474981123849
2009	6775.382176350132
2010	6062.849000039301
2011	6648.085098006296
2012	5928.601929346206
2013	6834.319752519041
2014	7416.6965523837425
2015	7341.133322859354
2016	8238.33484019489
2017	8398.748671789794
2018	8879.699192789152
2019	9168.646347911936
2020	9397.317112932109
2021	10528.648049932917
2022	9583.797074780743