2002

6.0

1988

5.4

1992

6.3

1991

6.5

1947

6.7

1996

6.2

1965

7.1

2008

5.2

2018

7.1

1997

5.1

2017

6.0

1973

9.2

2017

7.8

2002

4.6

1987

5.5

1994

7.4

2015

5.3

2015

5.9

2004

7.1

2005

4.9