Year % of GDP 1995 7.841699272565938 1996 6.760511340276643 1997 4.967194120664554 1998 3.820551635962495 1999 3.6579062824026662 2000 4.4653191603977005 2001 4.413458123961731 2002 4.4988410567468815 2003 3.9353441930890063 2004 4.196905699096932 2005 3.7232731286432426 2006 3.2559690915901696 2007 3.2839340453304895 2008 2.9548177139763525 2009 3.2098249642842256 2010 4.057280027952265 2011 3.6879219827725787 2012 3.4547449412083444 2013 3.173663381395498 2014 3.5407813880773236 2015 3.494675226718274 2016 3.259542150815622 2017 3.5523925961312584 2018 3.595160055260497 2019 3.7597452826556776 2020 4.001841680200065 2021 4.136372343198277 2022 5.008127011937915 2023 4.167304450515178