Year	Number
1996	42
1998	36.3184089660645
2000	41.7910461425781
2002	25.3731346130371
2003	29.8507461547852
2004	31.730770111084
2005	32.211540222168
2006	27.884614944458
2007	28.8461532592773
2008	26.9230766296387
2009	27.014217376709
2010	27.014217376709
2011	26.2910804748535
2012	26.7605628967285
2013	24.8826293945313
2014	26.6009845733643
2015	25.6157627105713
2016	27.0935955047607
2017	27.0935955047607
2018	27.6699028015137
2019	28.019323348999
2020	28.019323348999
2021	26.57004737854
2022	27.0531406402588