1991

6.7

2000

7.0

1942

6.5

2007

5.3

1961

6.1

2005

6.6

2012

0.0

2014

4.4

2008

6.6

2017

7.0

1988

7.1

1998

7.3

2001

6.0

2006

4.4

1970

6.6

1969

5.5

1971

4.5

2023

4.6

1990

7.7

1984

6.0