Year National currency (Billions) 2000 0.236 2001 -0.103 2002 0.381 2003 0.191 2004 0.358 2005 0.152 2006 -0.023 2007 0.903 2008 0.332 2009 0.105 2010 -0.500 2011 -0.284 2012 -0.069 2013 -1.199 2014 -0.125 2015 -0.351 2016 -0.746 2017 -0.021 2018 -0.679 2019 0.349 2020 0.756 2021 -1.848 2022 -3.446 2023 -1.397 2024 0.662 2025 2.623 2026 3.341 2027 2.208 2028 2.277 2029 1.215