Year	current US$
2006	1490300000
2007	1584967226.345306
2008	1430910836.8822439
2009	1273095697.0988133
2010	1341703937.57266
2011	1393200538.96527
2012	1329671093.4548001
2013	1315909937.85499
2014	1267878048.39873
2015	1179385312.43141
2016	1242650003.5127501
2017	1321670316.1823466
2018	1514390044.30581
2019	1521539162.75377
2020	960019513.99016
2021	1078410256.29856