1999

4.5

2023

6.3

2004

4.6

1991

4.6

1957

6.4

2014

7.4

1978

6.0

1987

4.1

2006

6.6

2005

6.8

1988

6.4

1999

5.8

1998

5.3

1981

6.2

1982

5.9

1984

6.1

1985

5.3

1988

5.2

2005

5.7

1989

5.7