Year	Number
1996	1.59574472904205
1998	6.91489362716675
2000	3.17460322380066
2002	1.05820107460022
2003	2.51256275177002
2004	9.70873832702637
2005	11.1650485992432
2006	12.5603866577148
2007	12.0772943496704
2008	12.0192308425903
2009	15.1658763885498
2010	29.3838863372803
2011	32.7014236450195
2012	31.7535552978516
2013	29.3838863372803
2014	24.761905670166
2015	20.4761905670166
2016	30
2017	32.8571434020996
2018	39.1509437561035
2019	33.4905662536621
2020	35.3773574829102
2021	35.8490562438965
2022	35.8490562438965