1998

6.8

1987

7.3

2014

7.4

1992

4.1

2001

6.9

1955

6.0

1995

5.8

2000

6.5

1983

7.4

1986

5.5

1987

6.6

1988

4.4

1951

0.0

1992

6.5

1990

6.7

1978

4.3

1964

7.2

1949

7.1

1943

6.3

1968

6.9