1997

7.4

1979

6.2

2002

5.9

1960

7.3

2002

6.3

1986

7.0

1999

7.3

1984

6.1

2006

7.6

1982

6.0

1994

6.2

1971

7.0

1998

5.5

2025

0.0

1980

6.7

1956

7.5

1984

6.3

1998

5.4

2015

6.4

2016

6.1