1998

5.1

1994

7.4

1994

4.6

1956

6.7

2000

6.7

1985

6.5

2003

6.0

2005

5.1

2006

4.1

6.4

2013

6.5

2007

7.5

1978

6.6

1984

6.5

2013

6.1

2017

7.3

1965

6.7

1968

6.5

2006

4.2

2011

7.0