Year	Number
1996	23.9130439758301
1998	27.1739139556885
2000	33.6956520080566
2002	40.5405387878418
2003	45.4054069519043
2004	44.2786064147949
2005	43.6274528503418
2006	49.0196075439453
2007	50
2008	51.9417457580566
2009	52.1531105041504
2010	48.3253593444824
2011	50.7108993530273
2012	46.445499420166
2013	47.8672981262207
2014	53.3653831481934
2015	51.4285697937012
2016	50.9523811340332
2017	52.3809509277344
2018	57.1428565979004
2019	60.476188659668
2020	54.761905670166
2021	63.3333320617676
2022	61.3207550048828