Year % of GDP 1982 33.803046636203625 1983 33.15002005203736 1984 34.8963146845066 1985 35.27910190759815 1986 35.25017972044299 1987 37.23376470014735 1988 37.97919297805199 1989 35.876590985154024 1990 36.694189756245116 1991 38.501169735599646 1992 40.60555262602452 1993 41.70723461735341 1994 41.69672689004652 1995 39.53009973335681 1996 38.759124188298486 1997 39.74224218197529 1998 38.347084943467294 1999 36.55791218450414 2000 35.73955353172804 2001 37.26929737169331 2002 38.883220893079425 2003 42.41350434343867 2004 45.67236733507426 2005 45.95478431202102 2006 48.26050542437677 2007 50.27522621544718 2008 51.78758738405417 2009 50.37304208254724 2010 51.32671357663089 2011 49.23332825012587 2012 48.66536340625867 2013 47.37839154315455 2014 47.615818413189565 2015 45.417589431373784 2016 44.38066143703105 2017 44.90504750342864 2018 44.48574798596891 2019 43.77302795899064 2020 43.9264166508497 2021 45.47068463551977 2022 46.05031050236793