1968

6.0

1969

7.3

2009

6.7

1965

6.7

1965

6.9

1895

5.5

1980

6.1

2000

6.3

2008

5.1

1952

7.0

2021

6.6

2015

6.1

1987

5.0

1992

7.2

2020

6.5

2007

4.8

1989

5.5

2011

7.0

1994

7.4