Year	Number
1996	37.5
1998	35.8695640563965
2000	34.7826080322266
2002	25.9459457397461
2003	21.0810813903809
2004	12.93532371521
2005	19.6078433990479
2006	30.8823528289795
2007	31.5533981323242
2008	35.9223289489746
2009	27.2727279663086
2010	25.3588523864746
2011	23.6966819763184
2012	28.9099521636963
2013	28.9099521636963
2014	25.480770111084
2015	20
2016	17.1428565979004
2017	12.380952835083
2018	13.8095235824585
2019	12.8571424484253
2020	16.1904754638672
2021	12.8571424484253
2022	16.0377349853516