1999

5.5

1988

3.7

1969

0.0

2013

6.7

1988

7.1

2002

6.3

1970

2.0

2004

5.5

1996

2.0

1993

7.8

2009

7.5

2002

5.6

1989

5.0

1976

5.7

2019

6.9

1975

5.5

1989

3.1

2003

7.8

2001

5.1

1968

7.6