Year Number 1996 0 1998 0.5 2000 0 2002 0 2003 0.497512429952621 2004 0 2005 0.478468894958496 2006 2.39234447479248 2007 1.43540668487549 2008 1.44230771064758 2009 3.79146909713745 2010 3.3175356388092 2011 2.3474178314209 2012 2.3474178314209 2013 3.75586843490601 2014 5.76923084259033 2015 6.1904764175415 2016 8.09523773193359 2017 8.09523773193359 2018 8.09523773193359 2019 7.61904764175415 2020 9.5238094329834 2021 9.5238094329834 2022 9.43396186828613