1997

6.9

1986

6.5

2002

5.8

2002

6.6

1997

7.4

1998

6.7

1963

8.1

2003

7.3

2005

6.0

1993

6.2

2001

6.9

1960

8.2

2000

5.9

1999

7.7

1971

7.6

1999

7.5

2002

7.6

1986

7.6

2019

9.5

1946

8.3