1991

6.4

1977

6.8

1999

7.9

1990

7.4

1998

7.1

1998

6.9

1993

6.6

1995

0.0

1997

7.5

2025

7.6

2013

7.1

2014

8.3

2013

5.1

1998

7.8

1994

6.0

2013

4.3

2017

6.9

2000

6.8

1996

6.7

2017

6.0