1971

7.4

1999

7.5

1972

4.7

1986

0.0

1992

7.4

1991

6.0

1985

5.7

1988

6.6

1989

4.5

1994

5.2

2006

6.3

1975

4.6

2008

7.7

2023

10.0

1999

5.1

2018

4.5

1976

6.6

1999

4.6

0.0

1996

2.8

1985

0.0