1999

6.8

2003

6.8

2006

6.4

1989

5.7

1999

6.2

1997

5.1

2014

0.0

1988

6.2

1983

5.8

1989

5.6

1978

4.5

1977

6.2

1986

5.6

2006

5.1

2007

6.2

1983

6.3

1979

6.1

2023

6.3

1985

6.6

2009

4.3