Year	Number
1996	52.1276588439941
1998	58.5106391906738
2000	70.3703689575195
2002	61.375659942627
2003	55.2763824462891
2004	60.6796112060547
2005	55.8252410888672
2006	53.1400947570801
2007	54.1062812805176
2008	53.3653831481934
2009	49.2891006469727
2010	54.502368927002
2011	60.1895751953125
2012	56.8720397949219
2013	58.7677726745605
2014	51.9047622680664
2015	47.1428565979004
2016	42.3809509277344
2017	40.476188659668
2018	37.7358474731445
2019	45.2830200195313
2020	45.7547187805176
2021	45.7547187805176
2022	49.5283012390137