Year	current US$
1990	7919820775.746767
1991	7189409870.401885
1992	5752387500
1993	6384242747.187685
1994	6993989734.697207
1995	6972124016.367642
1996	5909899124.229646
1997	5410792676.836022
1998	4664941642.12367
1999	4139526391.71869
2000	5962638478.915385
2001	6992477870.353834
2002	8670168274.319832
2003	9435464451.430374
2004	11853230265.619213
2005	13999479954.554686
2006	20733509403.572655
2007	31075319332.93016
2008	46744739379.83448
2009	39216822211.48462
2010	37096352880.06155
2011	44069781683.63364
2012	39112129330.94486
2013	46182838178.44403
2014	49353946710.87118
2015	43961284235.191765
2016	41014433144.83401
2017	43753813376.4679
2018	45587365597.57906
2019	48750208294.297035
2020	49284196848.51399
2021	54534110177.061356
2022	53464146479.42995
2023	65560449012.788994
