Year Percent of GDP (Units) 1995 8.659 1996 7.298 1997 6.033 1998 5.398 1999 5.933 2000 5.114 2001 4.772 2002 5.662 2003 5.600 2004 5.113 2005 4.700 2006 4.629 2007 3.765 2008 4.510 2009 7.240 2010 6.661 2011 6.160 2012 9.837 2013 10.228 2014 10.624 2015 10.069 2016 9.997 2017 9.122 2018 8.204 2019 8.491 2020 18.572 2021 17.753 2022 18.487 2023 20.741 2024 23.019 2025 25.538 2026 27.636 2027 29.321 2028 30.915 2029 32.371