2002

4.5

2010

6.3

2009

4.2

2003

6.5

1971

4.8

2020

5.0

1997

6.0

1991

6.6

2018

5.8

2009

6.6

2013

6.0

2003

6.5

1975

6.8

2013

6.1

2000

6.7

1993

6.9

1996

7.0

1976

5.7

2013

3.3

1995

5.3