Year current US$ 1996 8100000 1997 9500000 1998 500000 1999 600000 2000 9400000 2001 11500000 2002 10900000 2003 12004818.71 2004 16634547 2005 483545.772191016 2006 2121696.76663915 2007 2487220 2008 36950000 2009 27187940.39 2010 27285337.546176 2011 32975283.7674903 2012 36431743.4223383 2013 40938147.3901 2014 42100000 2015 41100000 2016 41100000 2017 261148690.279213 2018 288137023.045869 2019 329933337.227852 2020 291710443.51771 2021 343863185.266493 2022 338519060.914976