1992

6.7

2004

5.8

2000

7.1

1993

6.6

2000

5.3

1997

5.6

2006

6.4

1970

5.8

1990

6.7

2000

7.6

1986

7.6

0.0

1966

6.5

1995

2.0

1954

6.1

2001

6.4

1999

7.4

2019

8.1

1998

7.1

1983

7.3