1975

6.7

1973

4.8

2003

5.1

1977

6.6

1975

6.8

1977

6.8

2007

5.5

2009

7.3

1977

6.8

1972

6.7

1976

6.2

2019

6.4

2004

5.9

2001

5.9

2003

5.7

1988

7.3

2002

6.4

1966

6.0

2006

6.2

1966

5.4