1995

7.0

2003

6.5

2002

6.9

2000

7.1

1955

7.3

1992

4.0

1996

6.0

2024

6.7

1980

0.0

2023

6.1

2016

2.7

2014

6.0

1999

5.5

2006

7.0

1984

6.0

1978

5.9

1924

6.8

1970

5.0

1975

5.8

1968

6.3