2002

4.8

1980

1.0

1969

2.8

1996

7.3

1999

6.8

1987

7.3

2002

6.0

2001

7.5

1998

6.6

1973

7.0

2003

7.1

2003

6.0

2004

6.3

2000

6.8

2000

5.6

1998

6.7

1962

7.6

1972

6.9

2016

6.9

1980

2.0