1999

6.2

1990

5.8

1968

6.9

2014

5.7

2003

7.0

1993

6.1

1996

5.2

2006

6.9

1975

6.4

2024

7.3

1995

5.0

2020

6.9

1904

7.2

1984

7.0

2001

6.1

1956

7.3

2002

7.3

2009

6.9

1958

6.9

1988

7.4