1946

7.6

1968

6.8

1955

7.8

1995

7.9

1973

7.5

1999

0.0

2006

6.0

1998

6.8

1994

8.3

2001

7.4

2004

6.6

1997

7.4

1956

7.7

1967

7.5

1989

7.1

1992

8.1

2007

0.0

2023

0.0

2001

7.5

1991

5.7