2005

4.8

1969

6.9

1982

4.5

2001

4.7

1999

5.1

1979

5.9

1965

7.2

2005

6.9

2020

4.3

1966

6.8

1972

6.5

1992

6.5

2014

7.2

1975

6.0

1996

6.6

1977

5.0

1988

7.6

2001

7.9

2006

6.8

2005

7.3