Year	Number
1996	55.4347839355469
1998	54.8913040161133
2000	54.347827911377
2002	45.4054069519043
2003	48.6486473083496
2004	45.7711448669434
2005	49.0196075439453
2006	50.4901962280273
2007	50
2008	51.4563102722168
2009	45.4545440673828
2010	42.5837326049805
2011	47.8672981262207
2012	51.6587677001953
2013	52.1327018737793
2014	48.0769233703613
2015	44.761905670166
2016	44.761905670166
2017	46.6666679382324
2018	41.9047622680664
2019	41.4285697937012
2020	38.5714302062988
2021	41.4285697937012
2022	39.1509437561035