1993

6.1

1992

6.2

2003

7.0

1993

6.9

1993

6.2

2016

5.7

1966

0.0

2015

6.5

1985

7.2

2007

6.6

2008

6.8

2017

6.3

1988

6.9

1993

6.2

1994

6.7

1972

7.3

1970

6.5

1986

6.7

1989

7.2

1926

7.9