1990

6.2

1939

6.9

1947

6.7

1992

6.2

2008

6.0

1982

6.7

2006

4.7

2023

6.4

1972

7.7

1971

7.2

1944

8.1

1994

7.0

1998

6.9

1966

7.3

1983

5.9

1999

7.0

1949

7.9

1958

7.6

2003

7.1

2005

6.8