2001

5.4

2002

5.7

2003

5.5

1999

6.4

1985

7.5

2003

5.5

2001

6.0

2002

6.4

1994

7.4

2017

5.9

2000

5.8

1986

7.2

2000

6.4

1990

6.2

1998

6.1

1978

7.3

1980

7.0

1931

0.0

2018

6.5

1994

4.7