2007

6.6

2016

4.5

2017

6.3

2015

7.5

2008

6.0

2005

4.9

1972

3.0

2005

3.6

1984

4.8

1999

6.0

1983

5.1

2022

5.8

1997

6.2

2002

5.3

1988

6.4

1985

4.9

1971

5.2

2017

4.0

1977

4.5

1974

2.8