Year National currency (Billions) 2002 -8.204 2003 -8.591 2004 -8.392 2005 -7.817 2006 -8.664 2007 -9.799 2008 -8.810 2009 -7.561 2010 -5.577 2011 -5.165 2012 -4.939 2013 -4.637 2014 -5.838 2015 -6.746 2016 -6.783 2017 -6.845 2018 -7.065 2019 -8.808 2020 -6.785 2021 -7.839 2022 -6.014 2023 -4.835 2024 -2.222 2025 -0.225 2026 1.576 2027 3.372 2028 5.222 2029 7.120