2005

7.1

2005

4.5

1976

7.4

1996

7.0

2014

5.3

2006

4.7

1973

7.7

2003

5.7

1984

6.3

1990

5.1

2016

5.0

1997

6.0

1999

6.2

2005

6.6

2007

4.3

1929

7.4

1979

5.1

1987

6.8

1998

6.3

1999

6.1