2001

7.4

2002

5.5

2005

5.8

1975

5.5

1972

7.1

2003

4.0

1992

5.5

2002

6.4

2004

6.2

1966

0.0

1998

5.7

2001

4.6

1958

6.7

1947

7.1

2014

8.0

1987

6.8

1992

6.2

1970

6.6

1955

5.2

1968

6.4