Year	Number
1996	52.5
1998	52.7363166809082
2000	47.7611923217773
2002	46.766170501709
2003	53.233829498291
2004	48.0769233703613
2005	40.8653831481934
2006	40.3846168518066
2007	39.4230766296387
2008	34.6153831481934
2009	34.1232223510742
2010	33.1753540039063
2011	29.577465057373
2012	30.5164318084717
2013	33.8028182983398
2014	34.4827575683594
2015	32.5123138427734
2016	28.0788173675537
2017	26.6009845733643
2018	18.4466018676758
2019	18.3574886322021
2020	18.3574886322021
2021	14.4927539825439
2022	11.5942029953003