1989

7.4

1979

5.7

2005

6.9

2025

8.5

2000

6.3

1995

5.1

1949

7.6

2015

0.0

2000

4.0

0.0

1969

6.6

1971

7.4

1993

6.2

1954

8.0

1985

6.5

1997

6.6

1994

5.8

2008

2.7

2000

7.2

1991

5.9