1988

6.9

1939

4.7

1990

6.1

2002

6.5

2017

6.2

1991

2.0

1995

7.2

1966

4.9

1993

5.0

1998

6.8

2018

8.0

1967

3.3

1985

7.1

1992

5.3

1982

0.0

1997

6.0

2007

6.1

2005

6.6

1953

6.4

1967

5.4