| Year | Value | | 2021 | 5.1675631441335E-5 | | 2020 | 9.1870594984405E-5 | | 2019 | 8.4566472235192E-5 | | 2018 | 0.00011398523207333 | | 2017 | 6.36144455683E-5 | | 2016 | 0.00027886764771398 | | 2015 | 0.00014473632246922 | | 2014 | 3.0045797306545E-5 | | 2013 | 0.00073985452369171 | | 2012 | 0.00077882321911789 | | 2011 | 0.0005146633700297 | | 2010 | 0.00029077645455106 | | 2009 | 0.0002814142472998 | | 2008 | 0.00029254624092264 | | 2007 | 0.0069098067929167 | | 2006 | 0.012271367888956 | | 2005 | 0.0094928956730766 | | 2004 | 0.66512035472418 | | 2003 | 1.8396336384074 | | 2002 | 2.0757396220061 | | 2001 | 2.1934295651377 | | 2000 | 7.4685307379368 | | 1999 | 7.3715119560969 | | 1998 | 7.1944478204618 | | 1997 | 8.5003933665039 | | 1996 | 6.9586431719107 | | 1995 | 6.3810628683865 |
|