1991

5.3

2001

6.7

1990

6.1

1975

6.0

1971

6.0

1982

4.6

2009

7.6

2016

6.7

2006

5.1

1988

2.5

1977

5.9

1966

7.6

1982

5.8

2008

5.4

2007

4.5

2022

5.5

1979

6.3

2015

5.6

2004

1.0

2004

2.0