1993

7.4

2002

6.3

1988

5.1

2001

6.8

1962

7.7

2003

7.2

1997

6.7

1999

7.4

2003

6.1

2025

0.0

2006

7.7

2014

2.1

2013

6.3

2014

6.8

2013

6.2

1999

7.1

2001

7.7

1993

6.7

2003

6.0

2002

6.9