Year National currency (Billions) 2000 0.863 2001 0.904 2002 0.943 2003 0.714 2004 0.897 2005 0.944 2006 1.109 2007 1.344 2008 1.676 2009 1.765 2010 1.966 2011 2.340 2012 2.675 2013 3.044 2014 3.090 2015 3.092 2016 3.256 2017 3.321 2018 3.264 2019 3.080 2020 3.037 2021 3.509 2022 3.974 2023 4.390 2024 4.754 2025 5.068 2026 5.481 2027 5.892 2028 6.408 2029 6.867