Year	Number
1996	60.5
1998	60.1990051269531
2000	63.1840782165527
2002	57.7114410400391
2003	55.7213935852051
2004	54.8076934814453
2005	46.6346168518066
2006	26.9230766296387
2007	31.730770111084
2008	30.769229888916
2009	33.1753540039063
2010	32.7014236450195
2011	33.8028182983398
2012	36.6197166442871
2013	34.2723007202148
2014	23.1527099609375
2015	22.1674880981445
2016	21.674877166748
2017	21.1822662353516
2018	19.9029121398926
2019	23.6714973449707
2020	26.0869560241699
2021	27.0531406402588
2022	31.4009666442871