Year	Number
1996	60.2150535583496
1998	57.7540092468262
2000	60.1063842773438
2002	59.7883605957031
2003	55.0264549255371
2004	51.2315254211426
2005	53.6585350036621
2006	44.8780479431152
2007	47.5728149414063
2008	46.1165046691895
2009	44.9760780334473
2010	44.2857131958008
2011	43.1279602050781
2012	38.3886260986328
2013	36.4928894042969
2014	38.9423065185547
2015	47.6190490722656
2016	52.3809509277344
2017	51.9047622680664
2018	52.8571434020996
2019	48.5714302062988
2020	50.476188659668
2021	50.476188659668
2022	51.886791229248