2005

5.0

1991

5.7

1987

5.5

1993

6.2

1971

5.5

1990

7.4

1999

7.9

1989

5.4

1987

6.9

1980

6.5

1979

0.0

1986

4.7

1993

6.4

1985

7.1

1979

0.0

2019

6.1

2018

6.3

2002

6.2

1979

0.0