Year	Number
1996	29
1998	28.3582096099854
2000	28.3582096099854
2002	23.3830852508545
2003	25.8706474304199
2004	24.0384616851807
2005	24.519229888916
2006	18.269229888916
2007	18.269229888916
2008	19.230770111084
2009	28.9099521636963
2010	29.8578205108643
2011	29.1079807281494
2012	30.9859161376953
2013	30.9859161376953
2014	29.0640392303467
2015	26.1083736419678
2016	23.1527099609375
2017	22.660099029541
2018	24.2718448638916
2019	21.7391300201416
2020	22.7053146362305
2021	24.6376819610596
2022	25.6038646697998