Year Percent of GDP (Units) 1980 35.720 1981 29.747 1982 75.666 1983 55.066 1984 43.520 1985 29.038 1986 31.696 1987 39.111 1988 37.300 1989 37.579 1990 54.355 1991 46.192 1992 35.155 1993 39.654 1994 53.542 1995 78.150 1996 115.102 1997 73.121 1998 107.981 1999 75.978 2000 60.229 2001 52.688 2002 55.424 2003 43.328 2004 34.941 2005 28.897 2006 26.501 2007 29.586 2008 27.542 2009 39.393 2010 38.056 2011 32.049 2012 41.148 2013 30.308 2014 28.709 2015 24.701 2016 16.699 2017 14.032 2018 12.501 2019 10.892 2020 4.662 2021 4.765 2022 13.635 2023 18.267 2024 15.141 2025 16.527 2026 16.668 2027 20.244 2028 20.862 2029 17.867