Year	Number
1996	48.9130439758301
1998	51.6304359436035
2000	48.9130439758301
2002	41.0810813903809
2003	43.7837829589844
2004	39.8009948730469
2005	35.294116973877
2006	28.9215679168701
2007	26.6990299224854
2008	30.0970878601074
2009	29.1866035461426
2010	30.6220092773438
2011	27.962085723877
2012	29.3838863372803
2013	29.8578205108643
2014	32.6923065185547
2015	33.8095245361328
2016	37.1428565979004
2017	36.1904754638672
2018	30.9523811340332
2019	29.5238094329834
2020	32.3809509277344
2021	33.8095245361328
2022	32.5471687316895