Year Percent of GDP (Units) 1980 25.748 1981 23.519 1982 23.798 1983 21.750 1984 21.229 1985 21.168 1986 21.757 1987 22.263 1988 23.343 1989 24.268 1990 24.410 1991 23.602 1992 21.960 1993 19.543 1994 20.317 1995 20.513 1996 19.622 1997 19.452 1998 20.681 1999 21.364 2000 22.488 2001 22.165 2002 21.316 2003 21.186 2004 21.890 2005 22.453 2006 23.238 2007 24.165 2008 24.130 2009 21.333 2010 21.946 2011 23.221 2012 22.627 2013 22.287 2014 22.710 2015 22.712 2016 22.609 2017 23.436 2018 23.857 2019 24.365 2020 24.086 2021 24.878 2022 27.977 2023 27.112 2024 22.919 2025 22.570 2026 22.376 2027 22.293 2028 22.217 2029 22.179