Year	current US$
2002	6016649541.776817
2003	6268746657.202586
2004	10380438729.494993
2005	19231579861.12346
2006	29129789252.627586
2007	34905835377.487305
2008	48155650885.60482
2009	26638923851.5999
2010	39519749151.63061
2011	53415088665.27031
2012	59861845788.98752
2013	54027718249.99188
2014	51065861509.48102
2015	27893866117.74348
2016	15877825749.78062
2017	22019858301.08815
2018	26349018947.577118
2019	29397294705.24743
2020	18031645144.95383
2021	31565606005.153595
2022	47351765177.00683
2023	33740235853.283653