Year	current US$
1988	647249804.6899999
1989	987064516.1290323
1990	1110472675.656494
1991	1690713683.618994
1992	1792800000
1993	1912586292.7905488
1994	3861518689.8511057
1995	4131909868.0025444
1996	4308096532.511411
1997	4389965590.965379
1998	4635354832.307998
1999	4856005698.898326
2000	5109583827.378512
2001	5351768843.619829
2002	5223736466.146948
2003	5322243501.979529
2004	5792949922.194613
2005	6321335612.222335
2006	6763688104.723961
2007	7423421958.424805
2008	8496946608.23151
2009	8298679908.552324
2010	8758592272.105785
2011	9774307336.23792
2012	10531964139.348614
2013	10982938825.699354
2014	11880434070.78112
2015	12756706583.311321
2016	13286118584.256315
2017	13785943183.066065
2018	13025239912.27514
2019	12699046244.607012
2020	12681548303.685562
2021	14144067555.656649
2022	15649934214.927635
2023	17829215283.799656