Year	Number
1996	34.5
1998	36.3184089660645
2000	34.3283576965332
2002	40.2985076904297
2003	45.2736320495605
2004	46.1538467407227
2005	49.038459777832
2006	45.6730766296387
2007	45.1923065185547
2008	40.8653831481934
2009	40.7582931518555
2010	36.0189590454102
2011	34.7417831420898
2012	38.0281677246094
2013	37.5586853027344
2014	38.4236450195313
2015	35.9605903625488
2016	34.4827575683594
2017	33.9901466369629
2018	32.5242729187012
2019	33.3333320617676
2020	33.3333320617676
2021	33.3333320617676
2022	32.8502426147461