Year	Number
1996	57
1998	56.7164192199707
2000	55.2238807678223
2002	47.7611923217773
2003	49.2537307739258
2004	42.788459777832
2005	49.038459777832
2006	46.1538467407227
2007	41.3461532592773
2008	46.6346168518066
2009	46.445499420166
2010	56.3981056213379
2011	56.8075103759766
2012	58.2159614562988
2013	62.9107971191406
2014	69.4581298828125
2015	70.9359588623047
2016	68.9655151367188
2017	67.9802932739258
2018	70.3883514404297
2019	67.1497573852539
2020	70.0483093261719
2021	71.9806747436523
2022	71.9806747436523