1961

6.0

1996

6.8

1972

6.9

2004

5.9

1976

5.6

1959

5.0

2014

5.7

2022

0.0

2020

0.0

2005

6.2

1973

7.1

1988

6.3

1986

6.7

1994

5.8

1975

6.8

1994

6.7

1995

7.3

1974

7.1

2003

6.0

2008

6.5