Year	Number
1996	0
1998	0.995024859905243
2000	1.49253726005554
2002	0.497512429952621
2003	7.96019887924194
2004	4.807692527771
2005	9.61538505554199
2006	10.0961542129517
2007	15.865385055542
2008	16.3461532592773
2009	18.0094795227051
2010	19.4312801361084
2011	18.3098583221436
2012	16.4319248199463
2013	16.4319248199463
2014	15.7635469436646
2015	17.7339897155762
2016	22.1674880981445
2017	20.6896553039551
2018	20.8737869262695
2019	22.2222213745117
2020	21.2560386657715
2021	21.7391300201416
2022	22.2222213745117