2021

7.0

2003

6.3

2006

6.1

2013

6.9

2015

7.2

2002

8.4

2010

7.3

2011

7.4

2015

7.7

2013

7.0

1998

6.6

2001

4.9

1977

6.5

1992

6.4

1989

6.6

1999

8.2

2010

8.2

1988

7.8

1996

7.0

2001

7.8