2007

7.0

1979

6.5

2020

0.0

1996

6.0

2006

6.7

1992

6.4

2005

6.8

2006

6.9

1997

6.2

1984

10.0

2001

7.0

2001

7.8

2004

7.3

1991

6.8

2004

4.0

1986

7.1

1939

7.6

1953

6.5

1982

6.7

1983

8.0