1975

6.8

1942

6.0

2009

7.2

1987

0.0

1998

6.5

2000

5.8

2003

5.8

1992

7.0

2018

7.0

1961

7.7

1976

7.8

1979

7.3

1982

6.9

1985

7.1

1990

5.8

1987

6.4

2014

5.6

1990

6.4

2004

5.0

1986

6.3