1953

6.0

2002

4.6

1980

6.7

1996

5.3

1983

5.5

1973

7.7

1985

6.2

1999

5.7

2000

5.9

1998

5.3

1986

4.7

1997

5.3

1981

6.2

1982

5.9

1984

6.1

1985

5.3

2018

4.2

1933

5.0

1977

4.5

2015

0.0