Year	Number
1996	53.5
1998	49.2537307739258
2000	52.2388076782227
2002	42.7860679626465
2003	52.2388076782227
2004	56.25
2005	57.6923065185547
2006	51.4423065185547
2007	46.6346168518066
2008	46.1538467407227
2009	48.8151664733887
2010	48.8151664733887
2011	51.1737098693848
2012	56.8075103759766
2013	57.7464790344238
2014	63.0541877746582
2015	64.0394058227539
2016	63.5467987060547
2017	61.0837440490723
2018	60.1941757202148
2019	59.9033813476563
2020	56.038646697998
2021	55.0724639892578
2022	55.5555572509766