Year	Number
1996	0
1998	0.497512429952621
2000	12.93532371521
2002	25.8706474304199
2003	26.8656711578369
2004	23.0769233703613
2005	24.0384616851807
2006	25
2007	30.2884616851807
2008	28.8461532592773
2009	34.1232223510742
2010	34.5971565246582
2011	30.9859161376953
2012	34.2723007202148
2013	30.9859161376953
2014	32.5123138427734
2015	33.9901466369629
2016	34.4827575683594
2017	34.4827575683594
2018	33.4951438903809
2019	34.2995185852051
2020	34.7826080322266
2021	36.2318840026855
2022	38.164249420166