Year	current US$
2006	19820000.043138854
2007	18849999.967962503
2008	16679999.954998493
2009	14970000.103116037
2010	19510000.0333041
2011	12840000.005438924
2012	13919999.91238117
2013	16750000.102445478
2014	17830000.039190054
2015	14608973.93338382
2016	14866346.962749962
2017	17060658.39529037
2018	18610741.221345965
2019	16842299.159616236
2020	16719331.14295825
2021	17958970.796316862
2022	22597009.58058238