Year Percent of GDP (Units) 1997 84.182 1998 75.160 1999 78.018 2000 73.987 2001 71.172 2002 62.982 2003 56.381 2004 56.718 2005 58.164 2006 57.471 2007 53.533 2008 51.240 2009 46.476 2010 45.612 2011 50.028 2012 24.693 2013 24.624 2014 26.710 2015 29.172 2016 31.118 2017 32.595 2018 35.317 2019 37.216 2020 46.315 2021 50.165 2022 55.280 2023 57.069 2024 57.663 2025 56.935 2026 56.192 2027 55.512 2028 54.971 2029 53.832