Year Percent of GDP (Units) 1980 10.893 1981 11.544 1982 13.851 1983 15.379 1984 15.180 1985 15.837 1986 16.443 1987 17.649 1988 16.535 1989 14.269 1990 13.856 1991 21.894 1992 39.288 1993 54.134 1994 56.130 1995 55.151 1996 55.306 1997 52.215 1998 46.827 1999 44.011 2000 42.430 2001 40.892 2002 40.116 2003 42.688 2004 42.572 2005 39.865 2006 37.997 2007 33.904 2008 32.561 2009 41.531 2010 50.114 2011 51.934 2012 56.698 2013 59.621 2014 64.457 2015 68.332 2016 68.023 2017 66.043 2018 64.843 2019 64.877 2020 74.738 2021 72.585 2022 73.548 2023 76.710 2024 79.963 2025 82.572 2026 84.680 2027 85.816 2028 86.472 2029 87.155