Year National currency (Billions) 1990 0.001 1991 0.001 1992 0.002 1993 0.003 1994 0.021 1995 0.094 1996 0.123 1997 0.110 1998 0.153 1999 0.160 2000 0.298 2001 0.644 2002 0.654 2003 0.857 2004 1.072 2005 1.230 2006 1.759 2007 2.382 2008 2.377 2009 2.967 2010 2.680 2011 3.616 2012 4.344 2013 4.280 2014 4.168 2015 3.781 2016 3.662 2017 5.411 2018 6.234 2019 6.434 2020 7.066 2021 16.010 2022 24.021 2023 34.431 2024 41.602 2025 49.275 2026 55.264 2027 61.124 2028 66.088 2029 71.502