2014

6.8

2019

8.3

1994

7.4

1999

6.6

1972

2.6

2000

6.1

1968

0.0

1969

6.0

2015

5.8

1998

6.5

1994

5.0

2016

10.0

2009

8.0

1980

6.3

1981

7.5

1997

6.8

1999

6.5

2004

7.1

2006

4.4

2001

5.1