Year Percent of GDP (Units) 1995 44.958 1996 44.053 1997 43.064 1998 43.891 1999 44.047 2000 43.889 2001 44.261 2002 44.887 2003 44.560 2004 44.686 2005 45.070 2006 44.308 2007 43.361 2008 43.659 2009 43.548 2010 44.576 2011 44.227 2012 45.360 2013 45.689 2014 45.335 2015 45.863 2016 44.244 2017 44.017 2018 44.213 2019 44.092 2020 43.706 2021 44.852 2022 44.074 2023 43.974 2024 44.182 2025 43.524 2026 43.488 2027 43.491 2028 43.542 2029 43.608