Year Percent of GDP (Units) 1980 1.309 1981 0.683 1982 3.790 1983 5.954 1984 3.281 1985 10.206 1986 3.897 1987 10.551 1988 -3.234 1989 3.571 1990 33.012 1991 8.857 1992 0.996 1993 1.089 1994 -5.674 1995 3.940 1996 6.912 1997 12.086 1998 14.183 1999 18.071 2000 8.639 2001 9.980 2002 7.019 2003 8.817 2004 12.191 2005 13.594 2006 15.172 2007 15.045 2008 16.534 2009 14.746 2010 15.965 2011 19.075 2012 19.287 2013 19.809 2014 20.851 2015 23.603 2016 22.612 2017 22.755 2018 22.277 2019 23.763 2020 23.019 2021 20.251 2022 20.373 2023 25.138 2024 23.141 2025 22.191 2026 21.578 2027 21.363 2028 21.450 2029 21.829