2020

6.9

2014

6.6

2013

6.7

1968

6.9

1965

6.8

1936

7.5

1999

6.1

1988

5.2

1968

6.5

2002

6.2

1989

5.8

1963

7.0

2008

7.4

1994

4.4

2001

8.0

2005

6.0

2011

5.5

2021

7.8

2020

6.0

1988

5.5