Year	Number
1996	2.68817210197449
1998	5.34759378433228
2000	5.85106372833252
2002	5.8201060295105
2003	11.1111106872559
2004	13.7931032180786
2005	13.6585369110107
2006	9.7560977935791
2007	6.7961163520813
2008	3.88349509239197
2009	2.87081336975098
2010	3.80952382087708
2011	4.26540279388428
2012	8.05687236785889
2013	9.00473976135254
2014	12.5
2015	10.4761905670166
2016	12.8571424484253
2017	11.9047622680664
2018	12.380952835083
2019	14.7619047164917
2020	11.9047622680664
2021	11.9047622680664
2022	8.49056625366211