Year	Number
2004	38.8059692382813
2005	25.4901962280273
2006	25
2007	24.2718448638916
2008	20.3883495330811
2009	22.0095691680908
2010	20.0956935882568
2011	26.0663509368896
2012	27.962085723877
2013	25.5924167633057
2014	28.365385055542
2015	32.8571434020996
2016	31.9047622680664
2017	39.523811340332
2018	38.5714302062988
2019	40.476188659668
2020	41.4285697937012
2021	38.0952377319336
2022	40.5660362243652