1994

7.3

1985

7.2

2014

6.7

1977

4.0

2017

6.2

2002

6.4

2019

5.7

1992

5.0

1981

5.5

2020

3.5

2008

6.8

1970

4.5

1989

7.5

1991

8.0

1976

5.8

1978

6.7

1982

5.5

2015

4.7

2011

4.9

2024

0.0