1977

7.3

2009

6.1

1954

6.3

1983

4.0

1971

3.0

1991

3.5

2004

6.5

1996

8.0

1995

7.6

2016

7.0

1987

6.2

2019

8.0

2022

5.0

2006

7.8

2008

6.0

2002

7.1

2005

6.3

2007

6.1

2006

5.2

1999

5.0