Year	Number
1996	2
1998	1.49253726005554
2000	0.497512429952621
2002	0.995024859905243
2003	0.497512429952621
2004	0
2005	0.480769217014313
2006	0.480769217014313
2007	0.480769217014313
2008	0.480769217014313
2009	0.947867274284363
2010	1.42180097103119
2011	3.28638505935669
2012	5.16431903839111
2013	7.98122072219849
2014	9.85221672058105
2015	14.2857141494751
2016	24.1379318237305
2017	23.645320892334
2018	23.3009700775146
2019	23.1884059906006
2020	22.2222213745117
2021	4.8309178352356
2022	1.93236720561981