Year	Number
1996	57
1998	63.1840782165527
2000	56.7164192199707
2002	43.2835807800293
2003	41.7910461425781
2004	37.019229888916
2005	35.5769233703613
2006	33.1730766296387
2007	31.730770111084
2008	29.3269233703613
2009	29.3838863372803
2010	28.9099521636963
2011	26.2910804748535
2012	26.7605628967285
2013	25.3521118164063
2014	22.660099029541
2015	23.645320892334
2016	22.660099029541
2017	21.674877166748
2018	13.1067962646484
2019	14.0096616744995
2020	13.043478012085
2021	11.5942029953003
2022	12.5603866577148