2004

7.4

1970

7.3

1992

7.2

1994

5.3

1992

7.2

2008

6.7

2003

6.3

1993

7.5

2004

6.6

1990

6.3

2001

5.7

1980

6.9

1999

6.2

1975

7.2

1958

7.1

2002

6.0

1968

7.3

2022

7.4

2006

6.5

1955

7.0