Year	Number
1996	31.9148941040039
1998	30.319149017334
2000	42.3280410766602
2002	46.0317459106445
2003	29.1457290649414
2004	27.6699028015137
2005	38.3495140075684
2006	27.0531406402588
2007	23.6714973449707
2008	19.7115383148193
2009	19.9052124023438
2010	24.1706161499023
2011	34.1232223510742
2012	34.5971565246582
2013	35.5450248718262
2014	42.3809509277344
2015	43.3333320617676
2016	49.0476188659668
2017	42.3809509277344
2018	44.3396224975586
2019	45.2830200195313
2020	48.113208770752
2021	50.9433975219727
2022	41.9811325073242