Year % of GDP 1982 29.575146766454782 1983 28.99024889199309 1984 30.843271572572146 1985 31.413099924138432 1986 31.397138756756434 1987 33.780074650602 1988 34.9464840005663 1989 34.87544527617427 1990 32.58559732357459 1991 31.128429876218284 1992 35.50782011471172 1993 36.28340521408506 1994 35.50827544554516 1995 32.71022680726651 1996 32.00633308959227 1997 31.980169201007083 1998 30.806115163186885 1999 30.46376147425754 2000 31.185405613288413 2001 31.562087573735592 2002 32.263189114972356 2003 34.54083059670672 2004 37.17375178979624 2005 37.47084026951249 2006 39.20902449233297 2007 40.41775452307239 2008 41.00183991616382 2009 38.505302547746936 2010 40.04506713881873 2011 39.46317999807801 2012 38.67844911100489 2013 37.671867862442795 2014 37.521610829262904 2015 35.942642630364105 2016 34.990476166722345 2017 35.55265941901231 2018 35.57247576613445 2019 34.73886635865805 2020 34.85819192894066 2021 36.53680598638903 2022 36.93544160079715