1960

6.3

1995

6.6

1966

8.0

1962

7.5

2005

7.6

1982

7.6

1998

6.6

2000

8.1

2004

7.2

1993

6.7

1988

7.2

2005

6.9

2013

7.0

1968

7.3

1962

7.2

2022

0.0

2008

6.5

2007

6.0

1952

6.0

2019

7.1