2019

0.0

2012

5.8

2004

6.5

1991

3.5

2002

7.1

2006

5.2

1999

5.4

1990

0.0

2014

7.1

2015

4.3

2007

5.9

1994

0.0

1985

0.0

1986

0.0

1932

7.3

1980

6.7

2005

4.5

1976

7.4