Year Percent of GDP (Units) 1992 23.715 1993 22.583 1994 1.873 1995 23.779 1996 29.003 1997 31.428 1998 34.665 1999 26.495 2000 20.674 2001 20.677 2002 34.576 2003 53.170 2004 57.990 2005 41.535 2006 29.859 2007 21.525 2008 18.694 2009 18.949 2010 18.060 2011 20.268 2012 22.317 2013 25.658 2014 27.510 2015 27.914 2016 25.682 2017 24.379 2018 20.129 2019 20.308 2020 23.666 2021 17.079 2022 12.646 2023 21.825 2024 21.842 2025 22.218 2026 22.215 2027 22.418 2028 23.241 2029 23.241