1995

7.3

2005

6.6

2025

0.0

1989

7.9

1990

6.1

1992

7.4

1994

6.6

1994

7.6

1961

8.1

2013

6.2

1940

5.0

1979

7.6

2006

7.0

1998

6.6

1984

8.1

1999

7.7

2006

5.7

2002

6.3

1999

0.0

2017

0.0