Year National currency (Billions) 1998 2.191 1999 2.249 2000 2.309 2001 2.414 2002 2.667 2003 2.996 2004 3.589 2005 4.553 2006 5.714 2007 7.612 2008 8.149 2009 6.737 2010 6.555 2011 7.236 2012 8.175 2013 8.364 2014 8.533 2015 8.815 2016 9.039 2017 9.621 2018 10.878 2019 11.408 2020 11.337 2021 12.549 2022 14.294 2023 14.974 2024 15.948 2025 16.889 2026 17.806 2027 18.728 2028 19.653 2029 20.688