1987

5.7

1999

1.4

0.0

1966

6.0

1974

7.5

2002

5.4

2020

5.0

1985

6.2

2018

6.6

2017

5.8

2017

4.9

1990

6.9

1975

1.0

1989

4.2

1986

7.2

2008

6.6

2006

6.2

1997

6.6

2001

5.7

1993

6.6