1997

6.6

2007

9.8

2015

4.6

2007

5.3

1972

7.7

2005

5.8

1959

7.1

1978

6.9

2024

6.3

1958

7.3

1998

7.0

2011

5.5

1995

6.8

1970

7.5

2016

6.8

1971

6.8

1973

7.3

1989

7.3

2010

7.2

1990

6.1