Year	Number
1996	3.72340416908264
1998	5.31914901733398
2000	5.29100513458252
2002	0
2003	2.51256275177002
2004	3.88349509239197
2005	2.91262125968933
2006	0.483091801404953
2007	2.4154589176178
2008	1.92307686805725
2009	1.42180097103119
2010	1.42180097103119
2011	1.89573454856873
2012	2.36966824531555
2013	0.947867274284363
2014	0
2015	2.38095235824585
2016	4.2857141494751
2017	1.90476191043854
2018	0.943396210670471
2019	1.88679242134094
2020	0.943396210670471
2021	0.943396210670471
2022	0