Year Percent of GDP 1980 31.932 1981 38.668 1982 37.316 1983 39.096 1984 34.822 1985 36.81 1986 36.384 1987 39.659 1988 39.706 1989 44.364 1990 42.499 1991 43.875 1992 40.517 1993 29.92 1994 31.497 1995 32.399 1996 31.621 1997 32.227 1998 19.227 1999 13.64 2000 25.087 2001 25.315 2002 24.215 2003 28.089 2004 27.358 2005 28.579 2006 28.986 2007 28.736 2008 32.998 2009 31.173 2010 32.88 2011 32.984 2012 35.072 2013 33.831 2014 34.6 2015 34.063 2016 33.859 2017 33.717 2018 34.465 2019 34.606 2020 34.693 2021 34.837 2022 34.961 2023 35.147 2024 35.283