2009

6.0

2006

4.3

1993

5.2

1970

6.0

1990

5.8

1990

6.4

1988

7.1

1986

6.2

1988

5.5

1989

5.0

2019

5.0

1999

6.7

2005

5.6

2023

8.0

1964

6.8

1985

5.3

1987

6.8

1981

6.5

1960

7.4

1995

4.9