Year Percent of GDP (Units) 1990 21.196 1991 22.496 1992 20.338 1993 22.973 1994 21.903 1995 22.782 1996 23.233 1997 21.630 1998 22.906 1999 22.041 2000 23.538 2001 23.513 2002 21.849 2003 25.893 2004 24.150 2005 27.466 2006 27.135 2007 21.756 2008 24.180 2009 22.755 2010 24.633 2011 23.611 2012 20.803 2013 20.866 2014 24.494 2015 24.461 2016 26.220 2017 25.604 2018 26.959 2019 26.612 2020 28.137 2021 31.570 2022 32.733 2023 36.479 2024 40.694 2025 29.216 2026 28.849 2027 28.433 2028 27.974 2029 27.722