Year	Number
1996	51.7587928771973
1998	55
2000	43.7810935974121
2002	52.2388076782227
2003	46.2686576843262
2004	49.038459777832
2005	49.2822952270508
2006	50.7177047729492
2007	52.1531105041504
2008	53.3653831481934
2009	50.2369651794434
2010	50.2369651794434
2011	52.1126747131348
2012	52.1126747131348
2013	52.582160949707
2014	60.5769233703613
2015	58.5714302062988
2016	57.6190490722656
2017	58.0952377319336
2018	54.761905670166
2019	51.9047622680664
2020	53.8095245361328
2021	54.761905670166
2022	57.0754699707031