Year	current US$
1996	522921833.74669975
1997	531868978.80539495
1998	479127827.6204709
1999	357467978.78209966
2000	374399190.4882368
2001	393773905.3755951
2002	434809341.0910084
2003	520168713.4434787
2004	626408597.6627712
2005	775373412.2222682
2006	861138835.3282601
2007	1113743735.378559
2008	1336202501.757455
2009	1068969707.6361563
2010	1127298240.1806161
2011	1462653432.118091
2012	1612554125.4001496
2013	1615585595.334716
2014	1654769387.4326246
2015	1406479014.6218596
2016	1202155045.4742312
2017	1444817221.6284883
2018	1621455119.3529298
2019	1556695232.690125
2020	1509533717.0788178
2021	1869483560.4955137
2022	2429313524.4496264
2023	2520795485.4630313