Year	Number
1996	22.4043712615967
1998	16.3934421539307
2000	16.3934421539307
2002	29.7297306060791
2003	23.7837829589844
2004	23.8805961608887
2005	23.529411315918
2006	25.8536586761475
2007	24.2718448638916
2008	24.2718448638916
2009	22.0095691680908
2010	17.7033500671387
2011	17.5355453491211
2012	21.8009471893311
2013	23.6966819763184
2014	30.2884616851807
2015	27.619047164917
2016	28.0952377319336
2017	30.9523811340332
2018	37.6190490722656
2019	38.5714302062988
2020	33.8095245361328
2021	30.4761905670166
2022	11.3207550048828