Year Percent of GDP (Units) 1992 35.256 1993 30.472 1994 19.753 1995 23.025 1996 19.351 1997 18.421 1998 17.373 1999 23.783 2000 23.645 2001 25.516 2002 27.685 2003 27.714 2004 31.767 2005 25.450 2006 23.042 2007 24.101 2008 20.353 2009 15.589 2010 18.654 2011 16.154 2012 13.572 2013 9.478 2014 9.564 2015 17.655 2016 20.231 2017 18.567 2018 15.315 2019 12.154 2020 12.234 2021 12.525 2022 17.577 2023 10.837 2024 11.907 2025 10.817 2026 13.512 2027 16.192 2028 16.948 2029 17.997