1997

7.4

2014

5.5

2005

7.0

2003

7.8

1971

6.4

1997

7.5

2022

8.0

1996

7.9

1995

7.0

1983

5.9

2008

6.6

1988

7.7

2005

7.2

2003

5.8

2006

8.2

2004

7.2

2021

6.9

1995

5.2

2019

6.8

1975

7.8