Year	Number
1996	32.6633148193359
1998	28
2000	42.7860679626465
2002	34.3283576965332
2003	39.8009948730469
2004	22.5961532592773
2005	43.0622024536133
2006	39.7129173278809
2007	35.4067001342773
2008	36.538459777832
2009	37.4407577514648
2010	30.8056869506836
2011	22.0657272338867
2012	20.6572761535645
2013	13.6150236129761
2014	18.269229888916
2015	14.7619047164917
2016	18.5714282989502
2017	10.4761905670166
2018	15.2380952835083
2019	19.0476188659668
2020	20.4761905670166
2021	23.8095245361328
2022	32.5471687316895