Year	Number
1996	61.7021293640137
1998	68.0851058959961
2000	65.0793685913086
2002	65.6084671020508
2003	39.1959800720215
2004	22.8155345916748
2005	21.8446598052979
2006	14.9758453369141
2007	14.4927539825439
2008	12.5
2009	9.95260620117188
2010	9.47867298126221
2011	14.2180099487305
2012	13.2701425552368
2013	9.95260620117188
2014	16.1904754638672
2015	14.7619047164917
2016	14.2857141494751
2017	19.0476188659668
2018	19.3396224975586
2019	27.8301887512207
2020	25.943395614624
2021	25.4716987609863
2022	31.6037731170654