2017

2.9

1989

4.7

1973

2.7

1977

3.6

1977

5.3

1984

5.7

1978

4.7

1970

2.0

1988

4.0

1968

4.5

1980

3.5

1973

5.1

10.0

2002

1.0

1982

6.3

1990

3.8

1973

3.5

1982

5.2

1983

3.8

1995

5.0