Year % of GDP 1985 55.942971330412 1987 54.8480931837742 1988 52.7061022270465 1989 52.94457128538 1990 45.444480657609 1991 43.1383476450468 1992 41.177716834783 1993 39.6068412804582 1994 38.3092917999394 1995 42.8472913086732 1996 44.3476279970386 1997 43.176323094833 1998 46.0609959713861 1999 28.8550655119462 2000 32.0654354143763 2001 26.4404220559006 2002 24.3962198776258 2003 22.5844501693345 2004 21.1118901795143 2005 20.0751157306315 2006 20.1829119250613 2007 22.5217826972719 2008 24.3356079532783 2009 29.3471303326915 2010 33.1101651364158 2011 30.9088339588642 2012 28.9308988431593 2013 22.1639855517031 2014 22.1972662806897 2015 21.7028460975101 2016 20.4371265619881 2017 21.1727542584921 2018 21.6332219939098 2019 22.3514674811439 2020 20.8812465257334 2021 18.6351507826914 2022 19.2325267993874 2023 20.7577608528405