1994

7.1

1993

6.3

1991

6.7

2002

6.2

1997

6.8

2005

6.7

2007

6.6

1988

0.0

1963

7.4

1985

5.3

2020

6.2

2000

4.3

1958

6.6

1997

7.3

1965

7.4

2016

10.0

2005

7.0

1992

6.8

2005

6.2

1988

5.3