1996

6.7

2017

6.9

1991

6.4

1977

6.8

1999

7.9

1990

7.4

1998

7.8

1998

7.1

1993

6.6

2013

6.3

1995

0.0

1999

7.3

2006

0.0

2025

7.6

2004

6.8

1998

5.8

2020

7.0

2013

6.4

1993

7.0

2014

10.0