1987

6.9

1975

5.5

2024

0.0

1968

7.6

1988

7.1

2001

7.0

1985

5.8

1999

6.5

1987

0.0

2007

5.6

2019

6.4

2018

4.7

2001

5.1

1983

5.4

2002

6.8

1969

3.5

1989

4.5

1994

4.1

2005

6.3

2009

7.5