Year	Number
1996	29.2553195953369
1998	35.1063842773438
2000	11.1111106872559
2002	20.6349201202393
2003	7.03517580032349
2004	5.33980560302734
2005	14.0776700973511
2006	8.21256065368652
2007	8.21256065368652
2008	8.17307662963867
2009	5.68720388412476
2010	5.21327018737793
2011	9.47867298126221
2012	13.7440757751465
2013	16.1137447357178
2014	21.9047622680664
2015	19.5238094329834
2016	9.5238094329834
2017	11.4285717010498
2018	12.7358493804932
2019	16.0377349853516
2020	19.8113212585449
2021	16.0377349853516
2022	20.2830181121826