Year	current US$
1995	5156756988.020535
1996	5376569678.407351
1997	5743507137.672393
1998	6193856785.416418
1999	6608848186.404036
2000	6644059096.17613
2001	6900260801.432729
2002	7863517507.958162
2003	9739147706.309187
2004	11870551580.590607
2005	13473293092.719353
2006	17432797842.989716
2007	24064141704.28122
2008	27747675778.39497
2009	21009289685.84932
2010	19582750617.739456
2011	22025294067.857742
2012	21921709196.925007
2013	24169174908.487484
2014	24829267823.580303
2015	21249809167.609756
2016	22054516530.56153
2017	23978731268.288277
2018	26682240555.971745
2019	26653977212.117603
2020	26581541928.264664
2021	30821375100.480125
2022	32156084868.860046
2023	35276962042.96141