Year Percent of GDP (Units) 1980 3.650 1981 3.650 1982 3.650 1983 3.650 1984 3.650 1985 3.650 1986 6.673 1987 11.221 1988 8.958 1989 11.200 1990 7.528 1991 9.485 1992 7.958 1993 9.083 1994 6.865 1995 5.227 1996 5.705 1997 6.614 1998 7.239 1999 6.883 2000 7.613 2001 7.914 2002 5.967 2003 10.706 2004 6.368 2005 9.218 2006 11.797 2007 15.340 2008 14.237 2009 13.439 2010 20.662 2011 16.217 2012 14.283 2013 15.590 2014 13.064 2015 15.493 2016 16.247 2017 19.459 2018 18.868 2019 22.681 2020 17.608 2021 16.950 2022 23.363 2023 27.164 2024 22.345 2025 21.446 2026 21.004 2027 20.225 2028 19.294 2029 19.037