1932

7.8

1994

6.4

1999

6.7

2008

7.5

2007

6.8

2008

6.3

2015

5.4

2006

5.4

2003

1.6

2005

6.1

2005

6.0

1987

6.7

2023

6.3

1995

5.2

1980

7.0

1967

7.3

2004

5.5

1998

5.1

1991

5.3

1981

6.6