Year	Number
1996	43.7158470153809
1998	39.8907089233398
2000	45.9016380310059
2002	51.8918914794922
2003	47.5675659179688
2004	48.2587051391602
2005	49.0196075439453
2006	39.5121955871582
2007	39.3203887939453
2008	35.9223289489746
2009	48.3253593444824
2010	40.1913871765137
2011	42.1800956726074
2012	43.1279602050781
2013	43.6018943786621
2014	36.0576934814453
2015	40.476188659668
2016	43.8095245361328
2017	43.3333320617676
2018	44.761905670166
2019	45.238094329834
2020	31.4285717010498
2021	32.3809509277344
2022	28.301887512207