2006

6.2

1990

6.5

1999

6.5

1987

6.9

1975

5.5

2014

5.2

2005

6.3

2017

1.0

1992

5.9

1994

4.1

1991

2.0

2005

6.3

1982

2.0

1996

7.2

1986

2.0

1999

6.4

1996

4.0

2001

5.1

2002

6.8

2022

1.0