Year	years
1994	75.3
1995	75
1996	72.3
1997	71.9
1998	73.6
1999	75.5
2000	73.9
2001	76.3
2002	77.1
2003	78.4
2004	78.6
2005	77.4
2006	78.9
2007	79.1
2008	80
2009	79.5
2010	79.5
2011	79.5
2012	79.7
2013	80.7
2014	81
2015	80.9
2016	80.6
2017	81.6
2018	80.7
2019	82.6
2020	80
2021	82.5
2022	83.1