Year Percent of GDP (Units) 1988 95.892 1989 98.574 1990 101.890 1991 105.495 1992 113.167 1993 124.326 1994 131.063 1995 119.362 1996 119.110 1997 116.782 1998 114.127 1999 113.289 2000 109.026 2001 108.886 2002 106.361 2003 105.495 2004 105.101 2005 106.557 2006 106.740 2007 103.889 2008 106.164 2009 116.610 2010 119.199 2011 119.694 2012 126.496 2013 132.459 2014 135.369 2015 135.283 2016 134.787 2017 134.167 2018 134.450 2019 134.157 2020 154.917 2021 147.091 2022 140.487 2023 137.280 2024 139.228 2025 140.381 2026 142.585 2027 143.061 2028 144.706 2029 144.889