Year National currency (Billions) 1991 2.276 1992 2.114 1993 2.129 1994 2.346 1995 2.502 1996 2.737 1997 2.841 1998 2.806 1999 3.159 2000 3.483 2001 4.648 2002 5.547 2003 6.087 2004 6.425 2005 6.803 2006 8.409 2007 8.880 2008 9.751 2009 11.578 2010 12.322 2011 13.306 2012 14.969 2013 15.318 2014 16.220 2015 17.219 2016 18.195 2017 19.268 2018 20.026 2019 20.942 2020 23.766 2021 25.545 2022 26.661 2023 28.505 2024 29.836 2025 31.226 2026 32.711 2027 34.539 2028 36.699 2029 38.926