Year	Number
1996	36.0655746459961
1998	30.0546455383301
2000	30.0546455383301
2002	29.7297306060791
2003	27.5675678253174
2004	25.8706474304199
2005	26.9607849121094
2006	33.1707305908203
2007	36.8932037353516
2008	38.3495140075684
2009	39.2344512939453
2010	41.1483268737793
2011	27.014217376709
2012	43.1279602050781
2013	45.0236968994141
2014	46.1538467407227
2015	46.1904754638672
2016	47.1428565979004
2017	48.0952377319336
2018	49.0476188659668
2019	48.5714302062988
2020	41.9047622680664
2021	55.7142868041992
2022	59.4339637756348