1966

7.7

1971

7.2

1967

7.5

2006

6.4

2018

6.7

1992

7.0

1952

7.8

2021

0.0

1937

7.9

1952

7.3

1998

7.1

1990

7.8

2002

7.5

2003

7.8

1999

7.0

2005

7.8

1987

7.3

2001

7.3

1966

6.8

2025

0.0