1991

5.4

1989

7.1

1996

5.4

2004

10.0

1973

6.6

1983

6.8

2023

7.7

2009

6.3

1982

5.0

2007

4.7

2016

6.2

1974

5.9

2006

5.2

1992

6.0

1986

6.0

1991

6.1

1982

6.0

1986

5.5

1993

5.3

1971

7.8