2011

3.1

2006

6.3

1985

5.8

2002

6.8

1999

6.5

1980

5.1

2001

5.1

1983

5.4

2019

6.4

2007

5.6

1989

4.5

1994

4.1

1987

0.0

1999

4.5

2016

4.0

1990

6.8

1980

7.5

1975

5.6

1999

6.4

2024

0.0