Year Percent of GDP (Units) 1991 86.064 1992 69.305 1993 76.794 1994 106.349 1995 95.866 1996 90.676 1997 79.561 1998 79.890 1999 69.676 2000 53.406 2001 50.003 2002 47.312 2003 38.224 2004 32.690 2005 25.366 2006 22.473 2007 12.794 2008 7.637 2009 8.922 2010 9.513 2011 8.478 2012 8.583 2013 6.478 2014 6.853 2015 7.731 2016 18.094 2017 24.015 2018 34.493 2019 40.882 2020 45.967 2021 55.134 2022 48.085 2023 49.487 2024 46.401 2025 49.712 2026 51.897 2027 54.451 2028 56.973 2029 59.521