Year	Number
1996	100
1998	100
2000	100
2002	98.9417953491211
2003	98.4126968383789
2004	98.0295562744141
2005	98.0487823486328
2006	96.0975646972656
2007	96.1165084838867
2008	94.6601943969727
2009	94.2583694458008
2010	93.8095245361328
2011	94.3127975463867
2012	94.7867279052734
2013	95.7345962524414
2014	95.6730804443359
2015	96.1904754638672
2016	97.6190490722656
2017	97.1428604125977
2018	96.6666641235352
2019	96.6666641235352
2020	95.2380981445313
2021	96.1904754638672
2022	96.2264175415039