2004

5.5

1988

7.1

1976

5.7

2019

6.9

1970

2.0

2009

7.5

1993

7.8

2002

5.6

2012

4.4

1989

3.1

1989

5.0

1975

5.5

2006

7.4

2001

5.1

2002

6.3

2003

7.8

1968

7.6

1991

5.8

1999

4.8

1999

5.5