Year	Number
1996	3.72340416908264
1998	3.72340416908264
2000	8.99470901489258
2002	0.52910053730011
2003	5.52763795852661
2004	4.85436916351318
2005	6.31067943572998
2006	11.5942029953003
2007	12.5603866577148
2008	13.4615383148193
2009	24.1706161499023
2010	23.222749710083
2011	21.3270149230957
2012	19.9052124023438
2013	19.4312801361084
2014	22.8571434020996
2015	19.0476188659668
2016	16.1904754638672
2017	16.1904754638672
2018	20.7547168731689
2019	22.6415100097656
2020	24.056604385376
2021	24.056604385376
2022	30.6603775024414