Year % of current health expenditure 2000 0.052187 2001 0.04628069 2002 0.04450536 2003 0.05022801 2004 0.04680432 2005 0.07937498 2006 0.05232034 2007 0.06622829 2008 0.03665671 2009 0.05150365 2010 0.02814943 2011 0.01970796 2012 0.03197956 2013 0.01982955 2014 0.03547188 2015 0.02688968 2016 0.02016229 2017 0.02824592 2018 0.02606776 2019 0.04732713 2020 0.0416079 2021 0.6317367