Year US Dollars adjusted for inflation) 1991 113197.188 1992 113497.984 1993 113512.141 1994 115763.211 1995 115246.258 1996 114953.984 1997 117987.734 1998 119309.68 1999 120205.969 2000 124573.281 2001 124525.039 2002 124310.797 2003 124585.016 2004 128060.07 2005 131074.766 2006 133208.438 2007 135713.344 2008 135359.359 2009 131538 2010 137084.828 2011 136052 2012 135560.406 2013 136475.281 2014 136820.891 2015 135955.359 2016 135898.266 2017 136113.469 2018 138331.656 2019 139528.531 2020 140979.578 2021 142311.25 2022 144093.484