1992

6.8

1987

6.9

2017

6.7

2024

0.0

2002

7.8

1965

6.3

2004

6.3

1975

6.3

2014

5.8

2016

5.6

2007

7.6

2007

5.2

2005

5.9

1992

4.7

1993

7.4

1998

6.3

2006

4.9

2004

6.6

1955

7.1

2003

6.0