Year Percent of GDP (Units) 1980 10.834 1981 0.052 1982 -0.655 1983 6.240 1984 7.016 1985 10.765 1986 14.654 1987 9.595 1988 10.802 1989 6.431 1990 13.538 1991 10.320 1992 7.607 1993 11.284 1994 12.908 1995 8.136 1996 10.014 1997 6.830 1998 -0.267 1999 1.588 2000 26.821 2001 12.833 2002 19.533 2003 27.394 2004 33.999 2005 28.178 2006 41.342 2007 30.462 2008 26.300 2009 36.230 2010 37.405 2011 38.304 2012 37.135 2013 33.463 2014 36.185 2015 40.103 2016 34.941 2017 39.322 2018 37.343 2019 39.696 2020 42.842 2021 38.125 2022 35.586 2023 30.927 2024 35.728 2025 37.539 2026 39.369 2027 41.152 2028 41.106 2029 41.548