Year Percent of GDP (Units) 1989 36.989 1990 29.825 1991 19.489 1992 20.128 1993 18.537 1994 21.137 1995 23.728 1996 23.590 1997 19.229 1998 24.519 1999 22.161 2000 24.783 2001 23.813 2002 21.759 2003 25.236 2004 25.826 2005 24.215 2006 37.377 2007 32.997 2008 32.185 2009 23.216 2010 20.693 2011 15.686 2012 19.953 2013 21.321 2014 25.309 2015 16.913 2016 5.754 2017 13.319 2018 11.411 2019 13.553 2020 17.146 2021 6.254 2022 4.490 2023 5.109 2024 8.937 2025 9.552 2026 8.534 2027 9.773 2028 10.067 2029 9.908