Year % of GDP 1977 52.905754157904795 1978 61.34040136312004 1979 91.25321076111938 1980 86.07623255683883 1981 101.08598631359715 1982 96.13886725269835 1983 69.78701236249975 1984 70.69049780074008 1985 74.28622975959588 1986 76.29302296632851 1987 76.69225922880607 1988 64.9044304994103 1989 45.699405972821225 1990 57.6570442640835 1991 68.41065487687551 1992 71.79534201357052 1993 68.06529553892393 1994 61.75487663245717 1995 64.77116952454246 1996 59.342277486911 1997 56.78161847029038 1998 53.30713387983267 1999 54.09838245659141 2000 50.968747558081674 2001 48.660147132685324 2002 48.8870191415385 2003 49.263912982324534 2004 49.7962601373665 2005 51.49885201892469 2006 53.54616175793703 2007 52.914677603711425 2008 51.876652652805 2009 42.19426190094567 2010 42.13346114016244 2011 37.929130740170145 2012 41.82027746226129 2013 43.15593869196485 2014 45.76344940959053 2015 35.81971900647615 2016 36.181961478505386 2017 37.553427460807775 2018 43.63449119842715 2019 42.83184320965128 2020 36.85861675176877 2021 38.40469598884287 2022 45.08138206739007 2023 45.69410110159164