1972

6.2

1999

6.4

1998

6.6

1938

4.7

1995

4.9

1981

5.7

2021

6.4

1998

4.9

1994

5.1

2010

5.3

2016

7.5

1970

6.1

2011

6.2

2015

7.0

1975

5.4

1912

0.0

1986

0.0

2023

6.8

2013

5.1

2013

7.7