2018

0.0

1973

6.9

2004

5.4

2005

6.6

2000

3.8

1996

6.9

1979

6.5

1987

6.8

1989

6.6

2000

6.4

2019

6.7

1997

6.0

2007

6.4

1999

6.7

2006

6.3

2003

6.3

2005

5.7

1974

5.0

1982

4.7

1983

6.4