Year	Number
1996	48.5
1998	55.7213935852051
2000	61.6915435791016
2002	63.1840782165527
2003	59.7014923095703
2004	53.8461532592773
2005	54.8076934814453
2006	62.019229888916
2007	65.3846130371094
2008	67.3076934814453
2009	59.2417068481445
2010	58.7677726745605
2011	59.1549301147461
2012	58.6854476928711
2013	59.1549301147461
2014	64.5320205688477
2015	59.6059112548828
2016	61.0837440490723
2017	60.5911331176758
2018	57.2815551757813
2019	59.4202880859375
2020	59.4202880859375
2021	58.4541053771973
2022	58.937198638916