Year	Number
1996	59.5628433227539
1998	57.9234962463379
2000	53.0054626464844
2002	56.7567558288574
2003	58.3783798217773
2004	57.7114410400391
2005	53.9215698242188
2006	50.7317085266113
2007	52.4271850585938
2008	56.7961158752441
2009	56.4593315124512
2010	55.5023918151855
2011	50.2369651794434
2012	51.6587677001953
2013	48.8151664733887
2014	48.5576934814453
2015	40.476188659668
2016	44.2857131958008
2017	41.4285697937012
2018	42.3809509277344
2019	43.8095245361328
2020	39.0476188659668
2021	30.4761905670166
2022	33.4905662536621