1971

4.6

1986

4.4

2023

0.0

2016

7.3

1981

6.7

1988

7.1

2001

7.0

1993

8.1

1997

6.6

2000

6.8

1973

6.4

1978

6.1

1996

5.9

2001

5.9

2004

7.2

2005

7.2

1985

6.2

2004

6.4

2004

6.3

1999

6.8