1991

6.6

2016

3.6

1987

6.8

1969

5.3

1982

3.0

1984

5.8

2001

7.1

2000

6.5

2013

5.5

2025

6.1

2005

7.8

1930

7.7

2004

7.7

2006

7.5

1984

8.0

2002

6.8

1964

0.0

2023

0.0

1967

7.7

1942

7.3