1996

8.0

2004

6.4

2002

7.1

2005

6.3

1954

6.3

2007

6.1

2019

7.8

2022

5.0

2009

6.1

2005

7.4

2002

5.6

1977

7.3

2001

4.3

2006

5.2

2008

2.0

2008

1.5

1987

6.3

1995

7.6

2008

6.0

1986

6.9