Year National currency (Billions) 1988 4.346 1989 5.347 1990 6.322 1991 6.184 1992 5.695 1993 5.543 1994 5.735 1995 5.646 1996 5.826 1997 5.709 1998 6.413 1999 6.503 2000 6.140 2001 6.204 2002 6.708 2003 6.657 2004 6.804 2005 6.794 2006 7.425 2007 8.180 2008 8.722 2009 10.099 2010 11.451 2011 13.011 2012 15.839 2013 18.490 2014 19.625 2015 21.485 2016 21.932 2017 22.351 2018 22.880 2019 24.651 2020 27.288 2021 29.514 2022 31.699 2023 32.967 2024 34.724 2025 36.211 2026 37.028 2027 35.998 2028 37.198 2029 38.398