Year	Number
1996	32.7868843078613
1998	40.9836082458496
2000	34.4262313842773
2002	41.0810813903809
2003	40.5405387878418
2004	37.8109436035156
2005	45.5882339477539
2006	39.5121955871582
2007	49.029125213623
2008	45.1456298828125
2009	46.4114837646484
2010	44.0191383361816
2011	49.2891006469727
2012	51.6587677001953
2013	50.7108993530273
2014	54.8076934814453
2015	46.1904754638672
2016	40
2017	38.5714302062988
2018	42.3809509277344
2019	39.0476188659668
2020	39.0476188659668
2021	38.0952377319336
2022	37.7358474731445