2005

6.5

1930

1.0

1995

6.4

2008

6.6

2000

6.2

1987

6.8

1992

6.6

2018

5.8

1953

7.3

1981

7.1

1985

6.9

1992

5.3

2002

6.1

1989

6.1

1955

7.4

2018

7.1

2007

5.5

2000

8.1

2004

7.2

1992

3.3