1999

5.5

1994

7.8

1996

6.8

2018

7.3

2011

4.5

2003

6.3

2002

5.3

2007

7.5

2015

5.9

2014

5.7

1989

8.3

1998

4.9

1995

6.5

1988

8.3

2003

5.9