Year Percent of GDP (Units) 1990 12.192 1991 12.234 1992 13.360 1993 13.153 1994 10.654 1995 11.601 1996 11.878 1997 13.250 1998 16.042 1999 17.915 2000 14.361 2001 15.140 2002 20.072 2003 17.546 2004 16.553 2005 15.576 2006 16.268 2007 18.654 2008 15.611 2009 19.418 2010 17.291 2011 16.212 2012 14.908 2013 14.904 2014 15.803 2015 15.490 2016 15.367 2017 15.475 2018 19.814 2019 25.416 2020 27.497 2021 27.138 2022 20.522 2023 24.283 2024 25.749 2025 26.586 2026 27.833 2027 28.910 2028 30.118 2029 31.222