Year current US$ 2005 18749999.8509884 2006 18050000.259652697 2007 23549999.5797873 2008 27369999.9693781 2009 33870000.1239777 2010 27629999.924451098 2011 22170000.0278652 2012 21900000.3002584 2013 21580000.0838935 2014 20250000.163912803 2015 20690000.128001 2016 19899999.9538064 2017 20960000.0437349 2018 27329999.9143928 2019 48680000.6851554 2020 24539999.6936321 2021 25579999.7411668 2022 49220000.22977589