2002

6.9

2008

5.4

2002

4.8

1975

5.7

1971

6.8

2003

7.2

1964

7.1

1993

6.2

2005

6.3

1972

7.1

1999

7.4

2003

5.9

1995

7.0

2004

4.6

1999

7.5

1997

7.1

1994

5.3

2016

8.2

1979

6.4

1976

4.3