Year	Number
1996	27.3224048614502
1998	30.6010932922363
2000	33.8797798156738
2002	40.5405387878418
2003	38.3783798217773
2004	33.8308448791504
2005	40.6862754821777
2006	39.5121955871582
2007	41.7475738525391
2008	35.9223289489746
2009	32.0574150085449
2010	31.5789470672607
2011	28.9099521636963
2012	27.488151550293
2013	28.4360198974609
2014	25.9615383148193
2015	29.5238094329834
2016	31.9047622680664
2017	26.6666660308838
2018	21.9047622680664
2019	18.5714282989502
2020	23.3333339691162
2021	30
2022	34.4339637756348