Year Percent of GDP (Units) 2000 65.218 2001 49.409 2002 50.864 2003 48.153 2004 48.200 2005 43.783 2006 39.057 2007 35.576 2008 32.084 2009 26.021 2010 26.102 2011 30.004 2012 28.192 2013 24.539 2014 31.362 2015 28.410 2016 28.915 2017 32.769 2018 28.510 2019 34.239 2020 41.881 2021 37.859 2022 43.408 2023 35.115 2024 29.414 2025 29.221 2026 26.580 2027 25.328 2028 24.723 2029 24.120