2018

6.9

1988

7.6

2014

6.5

2016

5.7

1959

8.1

1972

7.9

1980

6.6

1951

7.0

1982

7.6

1964

7.5

1952

6.7

1969

6.0

2011

6.7

2002

7.4

2010

5.9

1994

8.0

1959

8.2

1990

7.7

1962

7.7

1928

7.6