1952

6.0

1953

5.3

2015

7.3

2002

7.1

1948

7.9

2004

6.6

1996

7.7

2005

6.7

1988

7.7

1996

7.4

1991

7.6

1990

6.8

1975

1.0

2005

6.8

1999

5.5

1984

5.1

1971

6.6

1971

5.6

2002

7.5

1990

7.0