1995

7.6

2002

7.2

2004

6.5

2002

7.3

1991

5.0

2009

6.1

1955

6.5

2002

6.4

2008

4.2

2009

6.5

2009

5.1

2022

6.0

2016

6.0

1980

6.5

1971

7.0

2003

5.7

1987

6.7

1992

5.7

1999

5.5

2001

6.3