Year	Number
1996	45.6989250183105
1998	31.0160427093506
2000	43.6170196533203
2002	38.624340057373
2003	34.3915328979492
2004	29.5566501617432
2005	23.4146347045898
2006	22.4390239715576
2007	19.9029121398926
2008	19.4174766540527
2009	19.1387557983398
2010	20.9523811340332
2011	20.3791465759277
2012	17.0616111755371
2013	20.8530807495117
2014	15.865385055542
2015	14.2857141494751
2016	14.7619047164917
2017	11.9047622680664
2018	11.4285717010498
2019	10.9523811340332
2020	10.9523811340332
2021	12.8571424484253
2022	14.6226415634155