2000

6.1

1981

6.0

2022

7.1

2020

5.3

1997

5.0

1976

7.9

2002

6.3

2006

6.6

2004

5.0

2016

6.1

1963

7.8

2007

6.2

1995

6.6

2005

5.8

2007

6.6

1989

6.0

1988

6.8

1943

6.2

2002

7.5

2014

4.7