Year Percent of GDP (Units) 1980 23.958 1981 20.318 1982 12.387 1983 12.570 1984 17.010 1985 16.560 1986 12.236 1987 16.292 1988 19.673 1989 17.758 1990 21.241 1991 22.589 1992 24.525 1993 32.189 1994 35.704 1995 27.905 1996 26.980 1997 27.572 1998 26.622 1999 32.647 2000 28.288 2001 26.001 2002 24.258 2003 25.281 2004 29.666 2005 27.623 2006 28.342 2007 33.665 2008 36.066 2009 20.599 2010 21.880 2011 26.000 2012 24.564 2013 21.760 2014 22.184 2015 25.118 2016 23.377 2017 24.821 2018 26.572 2019 22.731 2020 18.835 2021 24.332 2022 25.870 2023 22.104 2024 22.364 2025 22.676 2026 22.812 2027 22.825 2028 22.937 2029 22.921