Year	Number
1996	33
1998	40.7960205078125
2000	36.3184089660645
2002	36.8159217834473
2003	34.825870513916
2004	30.2884616851807
2005	29.8076915740967
2006	26.4423084259033
2007	25.9615383148193
2008	24.519229888916
2009	23.6966819763184
2010	25.1184825897217
2011	28.1690139770508
2012	30.046947479248
2013	29.1079807281494
2014	30.5418720245361
2015	29.5566501617432
2016	31.0344829559326
2017	32.019702911377
2018	39.3203887939453
2019	48.7922706604004
2020	48.7922706604004
2021	48.7922706604004
2022	51.2077293395996