Year Number 1996 0 1998 0 2000 0 2002 0.52910053730011 2003 4.7619047164917 2004 1.97044336795807 2005 7.80487823486328 2006 5.36585378646851 2007 3.88349509239197 2008 3.39805817604065 2009 1.43540668487549 2010 0.952380955219269 2011 2.36966824531555 2012 1.89573454856873 2013 9.95260620117188 2014 8.17307662963867 2015 10.4761905670166 2016 12.380952835083 2017 11.9047622680664 2018 12.8571424484253 2019 12.380952835083 2020 7.61904764175415 2021 12.8571424484253 2022 7.07547187805176