Year Percent of GDP (Units) 1980 41.821 1981 44.083 1982 43.862 1983 42.408 1984 42.926 1985 42.592 1986 41.505 1987 38.634 1988 34.833 1989 29.364 1990 26.136 1991 25.225 1992 26.716 1993 31.086 1994 36.231 1995 40.212 1996 43.234 1997 40.272 1998 38.311 1999 37.068 2000 31.755 2001 30.545 2002 31.317 2003 32.961 2004 35.902 2005 37.083 2006 37.679 2007 38.079 2008 45.022 2009 58.223 2010 68.767 2011 73.205 2012 76.030 2013 77.077 2014 78.900 2015 79.346 2016 78.826 2017 77.225 2018 76.565 2019 75.771 2020 93.088 2021 91.707 2022 90.549 2023 92.478 2024 92.868 2025 94.702 2026 95.528 2027 96.363 2028 97.215 2029 97.972