1984

1.0

1986

5.5

1990

6.7

1987

6.9

1999

6.5

2019

6.4

1975

5.5

2006

6.3

1985

5.8

2023

7.2

1989

4.5

1983

5.2

2002

6.8

2001

5.1

1991

0.0

1976

2.0

2005

6.3

1992

6.0

1994

4.1

2006

6.7