Year Percent of GDP (Units) 1995 21.619 1996 21.425 1997 20.605 1998 20.664 1999 21.863 2000 22.987 2001 24.575 2002 25.916 2003 26.800 2004 26.393 2005 26.312 2006 25.568 2007 29.164 2008 27.159 2009 34.567 2010 33.924 2011 33.772 2012 34.393 2013 37.035 2014 39.969 2015 41.489 2016 50.701 2017 54.951 2018 56.659 2019 60.404 2020 70.137 2021 71.836 2022 77.088 2023 83.644 2024 88.581 2025 92.994 2026 97.480 2027 101.766 2028 106.014 2029 110.073