2001

7.8

1988

7.5

2017

7.1

2016

7.7

1966

7.2

1999

5.6

2018

7.5

2002

6.9

2002

7.4

1956

6.6

1987

7.7

1978

6.3

1950

6.2

1958

6.3

2006

1.5

1967

7.0

1991

7.7

1990

5.3

1995

7.5

1994

4.0