2002

5.3

2007

7.6

1987

6.0

1988

6.2

1998

6.0

1993

6.1

2014

5.2

2002

4.6

1990

6.1

1991

6.8

2006

5.6

1989

6.3

2007

6.1

1943

6.4

1950

7.2

1989

1.0

2008

4.2

1984

5.4

1950

6.7

2008

6.4