Year % of GDP 1982 26.61029601041489 1983 26.544048714627905 1984 27.339449643630623 1985 28.31907486977759 1986 27.406240572966883 1987 28.898540083088285 1988 29.964089473719884 1989 29.487879008205784 1990 28.31765537639348 1991 29.103157566179217 1992 30.287898698496814 1993 31.35919464602809 1994 31.485728995200066 1995 29.925753142776326 1996 29.59245995103876 1997 29.948799061968398 1998 29.20406954950929 1999 27.972336717274406 2000 28.245323895014756 2001 28.772119801951227 2002 29.997860342514837 2003 31.820480637910368 2004 34.002283391848586 2005 34.54487193950866 2006 36.42742167625697 2007 37.32952218052949 2008 37.96124051395814 2009 36.107923341682195 2010 37.13063631203446 2011 36.21619670995686 2012 35.50728002369518 2013 34.57709422709022 2014 34.43742236716899 2015 32.91997046637722 2016 32.32823774031528 2017 32.94505647027524 2018 32.86742961687929 2019 32.228006302574904 2020 32.04666195973135 2021 33.69060396405273 2022 33.86117399181944