Year % 1995 2.357677 1996 1.420176 1997 1.336898 1998 1.376598 2000 1.202079 2001 1.200234 2002 1.291585 2003 2.315445 2004 2.294085 2005 49.19567 2006 56.53061 2007 56.7734 2008 56.41122 2009 50.32961 2010 52.213 2011 53.54362 2012 55.25308 2013 57.39204 2014 54.53339 2015 59.59302 2016 55.06403 2017 34.56397 2018 55.75988 2019 48.04884 2020 47.7327 2021 53.09656