Year National currency (Billions) 1985 1.865 1986 1.946 1987 1.434 1988 1.568 1989 2.099 1990 -2.643 1991 -4.494 1992 -1.625 1993 -0.235 1994 0.127 1995 0.954 1996 2.282 1997 2.695 1998 1.526 1999 2.549 2000 6.008 2001 4.775 2002 3.550 2003 3.823 2004 5.599 2005 9.026 2006 7.983 2007 11.716 2008 9.495 2009 10.243 2010 11.682 2011 17.413 2012 21.249 2013 20.812 2014 14.056 2015 5.747 2016 4.400 2017 6.148 2018 7.202 2019 4.670 2020 -1.306 2021 3.794 2022 17.128 2023 14.631 2024 13.498 2025 14.152 2026 14.322 2027 14.469 2028 14.680 2029 14.974