Year % of GDP 1983 23.54436525455606 1984 20.331000715804773 1985 21.040799715081388 1986 19.39911118107972 1987 20.41471129760832 1988 16.211746527430297 1989 16.612861185462354 1990 16.97211454022035 1991 17.67819610849456 1992 15.365669781846867 1993 19.03131832409909 1994 17.120196771440472 1995 17.582914091124657 1996 20.157581201440216 1997 20.753286012202693 1998 24.854718762433848 1999 25.072659636553997 2000 19.505153205546005 2001 20.413647159854754 2002 23.274900303411584 2003 27.610549702144542 2004 29.378516483745514 2005 22.698088248064945 2006 22.205474834260393 2007 20.101574342963215 2008 25.1516071629244 2009 21.882140504218146 2010 20.558815733792162 2011 22.178508598958366 2012 20.682652460827896 2013 22.90728422494354 2014 21.700525315241485 2015 23.105919082212946 2016 21.972800847657272 2017 22.51266281982687 2018 21.62893301170176 2019 22.630476361534996 2020 24.877551727301896 2021 25.164893182720803 2022 26.036222589764137