Year % of GDP 1982 28.469217666777944 1983 28.286914982655052 1984 29.423981482604855 1985 30.737580720964928 1986 29.63242892489623 1987 31.133720052002705 1988 32.37148305161101 1989 31.452873451770035 1990 29.786164243971346 1991 30.69313767987025 1992 31.96733455838019 1993 33.22750556587491 1994 33.14963451499303 1995 31.23400076817585 1996 30.972629487606063 1997 31.30811471147043 1998 30.39672931983586 1999 28.799198860229154 2000 29.07504702365721 2001 29.60947899992236 2002 30.91698842875518 2003 32.89806907238747 2004 35.06027476396871 2005 35.72105164076688 2006 37.7262438587491 2007 38.79958834407078 2008 39.70571177950281 2009 37.790121215069014 2010 38.73557073201963 2011 37.83661554412102 2012 37.15771346511934 2013 36.127785545289214 2014 36.03960554419756 2015 34.473381883250774 2016 33.79528536696385 2017 34.41792045821016 2018 34.29570000858348 2019 33.64193269225904 2020 33.71633641504606 2021 35.663820113489514 2022 35.87080139717319