2003

7.8

1972

7.1

1971

6.4

1997

7.6

1995

8.4

2005

6.9

2015

5.8

1995

7.3

2004

6.6

1988

7.7

1954

7.6

2003

5.8

2006

8.2

2004

7.2

2018

5.4

1932

7.5

1968

7.2

1987

7.3

1989

7.0

1992

6.7