Year	Number
1996	3.82513666152954
1998	6.01092910766602
2000	4.37158489227295
2002	5.40540552139282
2003	7.56756734848022
2004	6.46766185760498
2005	4.90196084976196
2006	1.46341466903687
2007	1.94174754619598
2008	3.39805817604065
2009	5.74162673950195
2010	4.30622005462646
2011	4.7393364906311
2012	2.36966824531555
2013	5.21327018737793
2014	4.807692527771
2015	6.1904764175415
2016	6.66666650772095
2017	7.61904764175415
2018	8.09523773193359
2019	10.9523811340332
2020	9.0476188659668
2021	10.4761905670166
2022	9.90566062927246