Year	Number
1996	65.5
1998	70.6467666625977
2000	65.1741256713867
2002	61.1940307617188
2003	61.1940307617188
2004	56.730770111084
2005	58.1730766296387
2006	51.4423065185547
2007	50
2008	49.519229888916
2009	54.502368927002
2010	54.028434753418
2011	53.9906120300293
2012	55.3990592956543
2013	56.3380279541016
2014	59.6059112548828
2015	58.6206893920898
2016	57.1428565979004
2017	55.6650238037109
2018	55.8252410888672
2019	53.6231880187988
2020	52.1739120483398
2021	48.7922706604004
2022	52.6570053100586