Year	Number
1996	44
1998	48.2587051391602
2000	47.7611923217773
2002	45.2736320495605
2003	42.7860679626465
2004	46.6346168518066
2005	47.5961532592773
2006	46.6346168518066
2007	47.1153831481934
2008	49.038459777832
2009	48.8151664733887
2010	48.8151664733887
2011	53.051643371582
2012	54.4600944519043
2013	52.582160949707
2014	53.694580078125
2015	54.1871910095215
2016	56.1576347351074
2017	57.1428565979004
2018	59.7087364196777
2019	59.9033813476563
2020	57.0048294067383
2021	57.0048294067383
2022	58.937198638916