Year	Number
1996	33.6956520080566
1998	41.3043479919434
2000	50.5434799194336
2002	50.2702713012695
2003	45.4054069519043
2004	41.2935333251953
2005	30.3921566009521
2006	31.8627452850342
2007	34.4660186767578
2008	38.3495140075684
2009	39.2344512939453
2010	38.7559814453125
2011	41.7061614990234
2012	49.2891006469727
2013	45.0236968994141
2014	46.6346168518066
2015	35.7142868041992
2016	37.1428565979004
2017	39.0476188659668
2018	35.238094329834
2019	32.8571434020996
2020	31.9047622680664
2021	31.9047622680664
2022	29.7169818878174