2001

7.6

1989

8.3

1997

7.1

1995

7.8

1986

8.3

2011

8.6

1997

7.9

2018

8.1

2006

8.6

2002

8.4

2020

8.4

1962

7.2

1982

7.6

2018

7.9

2022

8.3

2019

8.7

1985

7.4

1998

7.5

1973

6.8

2008

7.2