2017

6.1

2024

7.0

2016

5.5

2010

4.0

1981

7.1

1995

5.7

1986

6.9

1991

4.7

1994

4.7

2005

5.6

1982

0.0

1982

1.0

1994

7.4

2000

4.8

1974

5.5

2008

7.1

1991

0.0

1993

7.0

1984

7.2

1990

6.2