Year	Number
1996	57.4468078613281
1998	51.5957450866699
2000	57.6719589233398
2002	62.962963104248
2003	36.6834182739258
2004	41.262134552002
2005	43.6893196105957
2006	51.6908226013184
2007	48.3091773986816
2008	49.038459777832
2009	47.8672981262207
2010	54.028434753418
2011	54.502368927002
2012	52.6066360473633
2013	48.8151664733887
2014	45.238094329834
2015	38.5714302062988
2016	30
2017	41.9047622680664
2018	35.3773574829102
2019	43.8679237365723
2020	44.3396224975586
2021	46.2264137268066
2022	44.3396224975586