Year National currency (Billions) 1994 0.023 1995 -0.029 1996 -0.062 1997 -0.032 1998 0.054 1999 -0.039 2000 0.007 2001 1.157 2002 1.176 2003 0.115 2004 0.152 2005 0.343 2006 0.124 2007 0.663 2008 6.901 2009 2.085 2010 5.873 2011 5.656 2012 2.029 2013 0.956 2014 1.618 2015 -2.628 2016 -0.707 2017 -0.944 2018 4.348 2019 7.334 2020 -4.674 2021 3.919 2022 7.996 2023 2.150 2024 -1.477 2025 -2.584 2026 -2.732 2027 -2.870 2028 -3.525 2029 -3.832