Year US Dollars adjusted for inflation) 1991 75074.75 1992 76599.508 1993 78295.906 1994 80218.672 1995 81012.633 1996 81736.07 1997 83465.031 1998 84498.844 1999 86533.273 2000 88865.43 2001 89470.812 2002 90082.641 2003 89434.422 2004 90648.477 2005 92263.289 2006 93023.977 2007 92622.625 2008 92072.406 2009 90836.82 2010 92342.883 2011 93869.508 2012 94397.141 2013 95445.578 2014 97340.5 2015 97470.297 2016 98289.891 2017 99580.688 2018 99967.75 2019 101408.789 2020 102698.438 2021 103871.344 2022 105060.195