Year	Number
1996	6.01092910766602
1998	6.01092910766602
2000	4.9180326461792
2002	20
2003	16.2162170410156
2004	35.8208961486816
2005	32.3529396057129
2006	34.1463432312012
2007	30.0970878601074
2008	29.6116504669189
2009	40.6698570251465
2010	40.1913871765137
2011	39.3364944458008
2012	36.4928894042969
2013	35.0710906982422
2014	40.3846168518066
2015	38.5714302062988
2016	37.1428565979004
2017	40.476188659668
2018	41.9047622680664
2019	36.1904754638672
2020	34.761905670166
2021	36.1904754638672
2022	35.8490562438965