1998

5.5

1965

7.9

2011

7.5

2002

6.9

1997

7.7

1963

7.9

1995

5.9

1990

6.6

2007

6.3

1997

5.6

2015

5.3

2004

6.6

2004

6.4

2010

7.1

1982

6.9

1992

6.3

1983

5.7

1998

6.8

1969

6.6

1969

7.8