Year	Number
1996	1.08695650100708
1998	0
2000	0.54347825050354
2002	1.08108103275299
2003	5.94594573974609
2004	3.48258709907532
2005	4.90196084976196
2006	7.35294103622437
2007	7.76699018478394
2008	12.62135887146
2009	16.7464122772217
2010	16.7464122772217
2011	17.0616111755371
2012	12.3222751617432
2013	13.2701425552368
2014	10.5769233703613
2015	11.4285717010498
2016	13.8095235824585
2017	10.9523811340332
2018	11.9047622680664
2019	10.9523811340332
2020	9.0476188659668
2021	11.9047622680664
2022	11.7924528121948