Year Percent of GDP (Units) 1991 95.308 1992 54.769 1993 50.418 1994 58.902 1995 45.934 1996 26.452 1997 24.265 1998 25.622 1999 25.490 2000 21.374 2001 23.019 2002 21.268 2003 17.246 2004 13.855 2005 10.202 2006 7.793 2007 7.047 2008 5.376 2009 6.653 2010 6.161 2011 4.641 2012 3.602 2013 3.092 2014 3.429 2015 4.604 2016 9.884 2017 19.686 2018 14.335 2019 10.716 2020 10.600 2021 7.576 2022 2.947 2023 3.179 2024 7.082 2025 12.153 2026 17.136 2027 19.279 2028 23.869 2029 24.956