2007

7.5

2011

6.6

2015

5.1

1996

6.1

1996

5.2

1993

7.1

1990

6.5

2023

6.8

1985

7.1

2003

6.2

1998

6.4

2002

7.3

2008

4.8

2010

6.5

2010

4.9

2002

4.1

1989

4.8

1999

5.0

1998

5.2

2021

6.0