Year Percent of GDP (Units) 1990 26.636 1991 24.743 1992 24.630 1993 25.763 1994 25.182 1995 24.127 1996 30.698 1997 34.224 1998 34.270 1999 28.248 2000 31.689 2001 30.489 2002 30.783 2003 35.317 2004 34.162 2005 36.769 2006 37.369 2007 40.349 2008 41.247 2009 35.215 2010 30.203 2011 29.840 2012 36.218 2013 30.797 2014 27.780 2015 19.430 2016 16.068 2017 8.392 2018 14.264 2019 13.207 2020 10.646 2021 8.221 2022 12.172 2023 11.439 2024 10.645 2025 10.916 2026 16.310 2027 19.265 2028 19.307 2029 19.582