1994

6.0

1985

6.7

2008

6.5

2007

5.8

2002

6.3

1984

5.9

1965

6.8

2003

5.9

2021

4.0

2009

4.6

2005

6.1

1996

5.3

1985

5.4

1997

5.6

2004

5.5

1930

4.1

2003

6.4

1962

6.7

1986

7.4

1994

5.9