Year % of GDP 1982 31.293622904883076 1983 31.951798328833174 1984 33.3522980368349 1985 33.39698683690389 1986 33.792079961916954 1987 35.95836142180899 1988 36.73641876727102 1989 34.255196082207554 1990 34.48555837564352 1991 35.37099350970694 1992 36.57454437390312 1993 37.78700450999684 1994 38.01778258054506 1995 36.38725922795315 1996 35.06746648697584 1997 35.63452011622859 1998 34.64752540287658 1999 32.8683069663571 2000 32.851245236175 2001 32.978453286770325 2002 33.41267541919724 2003 35.257870714040024 2004 37.21942663075839 2005 37.47088793835801 2006 38.91540028024565 2007 40.11089517152349 2008 40.42035589892561 2009 39.011950747259604 2010 40.07744779778575 2011 38.91367218110283 2012 38.305235089943025 2013 37.65488532018544 2014 37.92026123978855 2015 37.30750050320546 2016 36.850961953851744 2017 37.453763067605976 2018 37.01865673545964 2019 36.56379331743688 2020 36.4768440031088 2021 37.938001023090514 2022 37.904327336752296