1999

6.8

2004

7.5

2007

7.1

2015

6.7

2024

6.8

1977

6.6

2023

7.0

2025

7.8

2019

0.0

1980

7.7

2004

0.0

1950

6.3

1997

7.2

1962

6.7

2004

7.7

1988

7.1

2008

5.5

1963

6.6

1968

6.0

1981

6.9