Year	Number
1996	35
1998	32.8358192443848
2000	30.8457717895508
2002	22.3880596160889
2003	24.8756217956543
2004	25.9615383148193
2005	25
2006	19.230770111084
2007	19.7115383148193
2008	18.269229888916
2009	20.3791465759277
2010	18.9573459625244
2011	20.1877937316895
2012	29.1079807281494
2013	23.9436626434326
2014	21.1822662353516
2015	21.1822662353516
2016	22.1674880981445
2017	19.7044334411621
2018	17.9611644744873
2019	14.0096616744995
2020	14.0096616744995
2021	13.043478012085
2022	14.4927539825439