Year Percent of GDP (Units) 1995 53.211 1996 41.697 1997 41.599 1998 41.882 1999 41.169 2000 40.847 2001 43.310 2002 44.658 2003 49.119 2004 42.324 2005 42.370 2006 41.461 2007 40.439 2008 40.869 2009 44.357 2010 43.630 2011 43.188 2012 44.675 2013 42.650 2014 42.622 2015 41.934 2016 39.751 2017 38.980 2018 40.595 2019 41.054 2020 47.219 2021 46.507 2022 44.590 2023 46.075 2024 43.876 2025 43.101 2026 42.805 2027 42.285 2028 41.564 2029 42.401