1997

7.1

2004

7.3

2000

6.8

2005

6.4

1989

6.2

2022

0.0

1985

4.4

1961

7.7

1996

6.7

2006

7.2

2003

6.6

1952

6.7

1987

6.8

2007

7.6

2002

6.1

1940

6.0

1956

6.2

1969

4.8

2000

3.8

2003

5.3