Year	current US$
1997	187900000
1998	353600000
1999	216900000
2000	327771487.64
2001	341848792.89
2002	380625949.44
2003	444116212.57
2004	524019263.77
2005	670456604.99
2006	829437304.29
2007	989044492.3399999
2008	1167030587.92
2009	1240733245.8600001
2010	1556232030.21
2011	1926753251.35
2012	2465208344.5499997
2013	2882107323.46
2014	2953892882.1200004
2015	2998449370.0499997
2016	3218476217.75
2017	3891854808.89
2018	4391718989.05
2019	4509690606.19
2020	1497697048.26
2021	2464138036.81
2022	5616864976.71
2023	6951302597.18