1985

6.5

1981

8.0

2022

0.0

1985

2.1

2001

7.4

2007

6.6

2010

0.0

2010

6.8

2021

8.4

2020

8.1

2016

7.1

2015

5.8

1997

5.7

2005

6.5

1978

7.7

1990

7.8

2006

5.0

1990

7.9

2004

7.6

2002

7.6