1985

7.6

1996

6.7

1989

6.8

2013

7.0

2013

8.2

2015

7.4

2020

5.7

2021

7.9

2019

7.5

1997

7.3

1995

7.4

2020

6.2

2001

6.4

2004

8.5

1998

7.3

1999

7.7

2019

10.0

2013

7.8

2004

6.8

2004

7.3