2015

7.8

2008

6.7

2012

5.0

0.0

2007

6.6

1962

8.0

1987

8.1

1968

5.4

1995

8.1

1995

6.3

2008

6.3

2025

7.0

1999

6.4

1996

6.8

1995

6.9

2002

6.0

2005

6.5

1993

7.7

1998

7.0

1931

7.2