Year current US$ 1990 300000.011920929 1991 439999.997615814 1992 1519999.9958276735 1993 1689999.988302586 1994 1280000.0235438335 1995 2829999.977722763 1996 3360000.0478327256 1997 3819999.98539686 1998 4160000.078380108 1999 14300000.319257371 2000 11529999.809339644 2001 9159999.780356888 2002 11060000.05453825 2003 5929999.945685268 2004 10730000.182986256 2005 10070000.145584341 2006 12370000.254362818 2007 12710000.267252337 2008 15450000.129640108 2009 14979999.784380196 2010 18169999.806210402 2011 12709999.779239293 2012 23960000.025108434 2013 14959999.607875943 2014 14720000.468194475 2015 6290000.136941673 2016 13370000.05692244 2017 11080000.156536698 2018 11000000.145286324 2019 10750000.11920929 2020 5890000.00804663 2021 10849999.973550439 2022 18950000.572949648