Year % of GDP 1995 22.336507084030703 1996 20.604068297244705 1997 17.970870166171824 1998 13.70625424175298 1999 12.83037837597433 2000 13.953106571354839 2001 15.460526505717572 2002 14.566761326481128 2003 15.136051269053914 2004 14.230413336663336 2005 13.072527355784553 2006 12.245557938955178 2007 11.544710836608647 2008 11.040003496392359 2009 10.37462591099296 2010 9.953772395784384 2011 10.564741875491132 2012 10.654437529853416 2013 11.193852554233018 2014 10.069132476555486 2015 10.01582216677996 2016 10.03363118612144 2017 9.970073234391528 2018 10.069197848283578 2019 9.894330508087728 2020 10.106664347271536 2021 9.63995995697745 2022 8.844161479332847 2023 8.21860979897231