Year % of GDP 1982 26.61746216414131 1983 26.47034295313594 1984 27.630299013892852 1985 28.610912912853063 1986 27.56080643157049 1987 29.192794494179758 1988 30.344894021854568 1989 29.83572553317272 1990 28.62613001402708 1991 29.362031147975195 1992 30.47542207484249 1993 31.53913737081151 1994 31.496456236313193 1995 29.799327427037188 1996 29.516760225193238 1997 29.488037248901207 1998 28.537898086414327 1999 27.978679120981845 2000 28.792207454854356 2001 28.94382135704137 2002 29.776261535588514 2003 31.389000440690317 2004 33.53129695680272 2005 34.300968068042245 2006 36.07223092796896 2007 36.958194977635486 2008 37.4494105947184 2009 35.055385478023176 2010 36.38198013204236 2011 35.72033703629312 2012 34.951120058884214 2013 33.85646107247594 2014 33.581035536913625 2015 32.649450907541 2016 31.93222647374086 2017 32.45677205225147 2018 32.59521150566394 2019 31.83722074127655 2020 31.605203469068258 2021 33.40715418319955 2022 33.66715938798869