Year Percent of GDP (Units) 1995 19.209 1996 16.721 1997 11.443 1998 14.291 1999 25.414 2000 13.133 2001 12.954 2002 11.885 2003 10.659 2004 9.710 2005 6.855 2006 5.297 2007 4.003 2008 3.221 2009 4.726 2010 4.981 2011 4.967 2012 5.831 2013 6.179 2014 8.533 2015 17.980 2016 20.608 2017 22.509 2018 18.685 2019 17.656 2020 21.327 2021 26.349 2022 17.343 2023 18.371 2024 18.268 2025 18.910 2026 19.292 2027 19.671 2028 21.068 2029 22.132