1999

7.1

1987

6.8

1978

5.0

1931

0.0

1987

5.9

2011

9.5

1966

6.5

1966

6.5

1965

6.3

1964

6.6

2000

4.7

2000

6.4

2001

5.8

2003

6.0

2006

5.5

2013

4.8

1982

6.1

1987

5.0

1974

7.9

1996

6.6