1996

7.2

2000

5.5

1992

7.3

1994

6.1

1998

6.8

2017

6.1

2021

0.0

1982

6.6

2008

8.5

1997

7.4

2005

7.5

2014

6.4

2003

5.9

1956

7.7

1995

8.2

1994

8.3

1976

8.1

1998

7.8

1991

8.3

1996

7.9