1994

5.3

1995

4.5

1995

6.8

1972

4.2

2010

6.0

2002

7.3

1993

5.6

1992

7.1

1994

7.2

1993

6.1

1996

7.5

2011

7.5

1984

6.7

1988

5.2

2002

6.5