Year constant 2011 international $ 1990 140739711.432635 1991 140739711.432635 1992 141974270.304851 1993 143208829.177067 1994 145677946.9215 1995 145677946.9215 1996 148147064.665932 1997 150616182.410364 1998 160492653.388093 1999 158023535.643661 2000 167900006.621389 2001 165430888.876957 2002 171696522.065228 2003 175141311.686373 2004 172287628.853245 2005 180818677.572033 2006 180729542.421459 2007 184407293.301791 2008 180550531.384988 2009 181999903.500969 2010 180318434.317011 2011 183193721.930402 2012 191828226.682682 2013 199913352.736825 2014 198518301.211221 2015 219174940.261141 2016 230418067.910413 2017 231174852.499081 2018 235800744.593275