2004

7.2

1990

6.8

2003

8.3

1994

8.5

2000

8.2

1982

7.9

1994

8.3

1976

8.1

1992

6.9

1958

8.2

2005

7.1

1995

8.2

2015

6.3

1994

7.0

2001

7.5

2020

5.5

1993

6.7

2023

0.0

1988

6.3

1996

5.5