1998

6.6

2018

6.1

1979

6.7

2014

6.3

1964

7.5

1991

6.3

1969

7.8

1939

7.9

2002

6.7

1966

7.2

1963

6.3

1983

6.9

1989

7.6

1999

7.1

2024

9.0

1984

5.0

1973

7.5

1968

4.9

2000

6.1

2006

6.4