Year % of current health expenditure 2000 0.00474933 2001 0.08670352 2002 0.09046112 2003 0.04454352 2004 0.25219864 2005 0.37918553 2006 0.0891426 2007 0.06064807 2008 0.05741692 2009 0.00654157 2010 0.0047141 2011 0.00585042 2012 0.00532269 2013 0.00570826 2014 0.00585135 2015 0.03996856 2016 0.03145019 2017 0.02132984 2018 0.02036224 2019 0.01247789 2020 0.00953531 2021 0.24232656