1969

4.7

1975

4.1

1980

8.6

0.0

2019

7.1

1930

6.7

2015

6.1

2020

6.4

1975

7.0

6.6

6.6

1972

6.6

1972

6.3

1993

6.5

1999

6.6

1985

6.8

2015

6.6

2018

6.5

7.0

1985

6.1