Year Percent of GDP (Units) 1995 47.445 1996 50.717 1997 46.087 1998 44.018 1999 42.476 2000 43.034 2001 44.702 2002 45.041 2003 45.423 2004 43.480 2005 44.236 2006 44.451 2007 42.900 2008 44.172 2009 45.014 2010 46.245 2011 44.415 2012 43.432 2013 43.415 2014 42.907 2015 41.737 2016 41.334 2017 41.419 2018 41.447 2019 41.876 2020 48.247 2021 44.092 2022 43.898 2023 47.629 2024 48.585 2025 49.030 2026 49.713 2027 48.644 2028 47.903 2029 47.978