Year	Number
1996	14
1998	27.8606967926025
2000	45.7711448669434
2002	39.3034820556641
2003	37.3134346008301
2004	31.25
2005	27.4038467407227
2006	32.6923065185547
2007	30.769229888916
2008	29.8076915740967
2009	29.3838863372803
2010	29.8578205108643
2011	30.5164318084717
2012	30.5164318084717
2013	30.5164318084717
2014	34.4827575683594
2015	40.8866996765137
2016	41.8719215393066
2017	41.3793106079102
2018	37.3786392211914
2019	37.6811599731445
2020	34.7826080322266
2021	34.2995185852051
2022	35.2657012939453