1990

5.5

1997

6.5

1962

5.0

1996

6.0

2006

6.4

2008

5.9

1985

6.7

2021

6.3

1999

6.0

1951

6.5

1994

3.2

2009

5.9

1995

6.1

2021

6.7

2007

7.1

1985

6.1

1986

7.4

2006

3.5

2004

6.6

2008

6.4