1989

5.9

2011

7.5

2022

7.4

2011

8.1

2002

4.7

2009

6.7

2005

6.3

1985

6.7

1967

7.4

2002

7.7

1982

6.8

1993

6.5

1992

5.7

2008

6.8

2015

4.4

2020

6.3

2020

7.0

1937

7.2

1984

7.3

2009

5.8