2006

7.4

2003

7.8

1960

6.1

1993

7.7

2002

5.5

1969

6.5

2018

4.4

1999

5.5

1977

5.6

2007

5.9

2009

7.5

1976

5.6

1975

5.5

1988

7.1

2001

5.1

2004

5.5

1968

3.5

1969

4.5

1984

1.0

1964

4.4