Year	Number
1996	38.7096786499023
1998	32.6203193664551
2000	32.4468078613281
2002	32.8042335510254
2003	30.1587295532227
2004	19.2118225097656
2005	14.1463413238525
2006	14.1463413238525
2007	11.6504850387573
2008	12.62135887146
2009	11.0047845840454
2010	12.380952835083
2011	11.3744077682495
2012	15.1658763885498
2013	16.1137447357178
2014	20.1923084259033
2015	18.0952377319336
2016	12.380952835083
2017	12.8571424484253
2018	12.8571424484253
2019	12.380952835083
2020	13.8095235824585
2021	14.7619047164917
2022	14.6226415634155