2005

4.9

2001

5.8

1985

2.0

1985

6.5

1981

8.0

2021

7.0

2015

0.0

2002

6.9

2001

6.0

1991

6.6

1974

5.3

2003

5.4

1991

7.4

2006

5.8

2003

7.3

1964

8.0

2004

6.6

2001

6.5

2016

8.0

2019

7.5