2014

5.8

2003

4.1

1997

6.1

1995

6.9

2008

6.2

1988

6.2

1983

4.6

1968

6.2

2001

5.9

1986

6.6

2023

9.0

1982

6.0

2016

3.3

2006

6.6

1979

5.6

2005

6.3

1985

6.4

2007

6.2

1994

5.7

2001

6.7