Year	constant 2015 US$
1991	15184128370.311361
1992	12092859083.70848
1993	16004496934.656721
1994	19171628335.406723
1995	19414930235.472057
1996	20429781711.75928
1997	22659722731.869724
1998	27076169081.65
1999	27313116089.248474
2000	28843675547.958076
2001	27798344267.136833
2002	29211939176.42952
2003	29697514610.723778
2004	35057145158.54761
2005	34742126318.99259
2006	35243944045.17913
2007	34466522871.48828
2008	35066689339.76533
2009	26821895053.386192
2010	27364871613.578796
2011	26375860309.84579
2012	25307005092.49729
2013	26583347802.350246
2014	29906498527.74024
2015	29431337205.659924
2016	28408219594.927193
2017	31267564640.705967
2018	36253500756.267166
2019	40604304905.44422
2020	37829976819.73991
2021	42722243204.782814
2022	42837858108.168564
2023	36475200701.67272