1975

5.5

2014

6.2

1988

7.1

1964

4.4

1977

5.6

2009

7.5

1960

6.1

1993

7.7

2002

5.5

1976

5.6

2001

5.1

2006

7.4

2003

7.8

1968

7.6

2023

7.2

2018

4.4

1999

5.5

1988

3.6

1969

6.5

1969

4.1