Year	Number
1996	64
1998	63.1840782165527
2000	62.1890563964844
2002	57.7114410400391
2003	56.2189064025879
2004	59.1346168518066
2005	59.6153831481934
2006	41.8269233703613
2007	44.711540222168
2008	44.711540222168
2009	47.3933639526367
2010	48.8151664733887
2011	52.582160949707
2012	56.8075103759766
2013	56.3380279541016
2014	49.7536964416504
2015	49.2610855102539
2016	48.7684745788574
2017	47.290641784668
2018	50.4854354858398
2019	44.9275360107422
2020	46.3768119812012
2021	49.7584533691406
2022	53.6231880187988