1997

3.9

1987

7.0

2005

5.3

2003

5.0

1985

5.2

2006

5.6

1982

6.0

1968

5.0

1988

4.3

2009

7.8

1967

6.9

1927

0.0

2004

8.2

2004

4.2

1993

5.1

2022

0.0

1963

7.4

2004

5.9

2006

6.3

2024

0.0