Year % of GDP 1994 23.42612235069197 1995 38.739174808496536 1996 37.68789013872063 1997 43.09745409170289 1998 43.73692794854131 1999 42.48858742327229 2000 39.073854872738835 2001 37.3268671167793 2002 37.29140065867847 2003 36.4807575353436 2004 36.81580697127602 2005 36.885440834746255 2006 38.904481538828094 2007 37.261574286800005 2008 36.25640258809156 2009 38.10114355300611 2010 38.03220671348221 2011 39.296201740290556 2012 39.45370833277908 2013 39.57860465132397 2014 39.79609352452525 2015 39.69672709198934 2016 41.04376699746714 2017 40.66077804685303 2018 41.29951011626771 2019 40.22964005928073 2020 41.88789243049574 2021 41.45236079354561 2022 40.729034554901666