2021

6.8

2015

6.2

1990

7.0

1994

6.6

1991

6.7

1998

6.8

1999

6.6

1998

6.2

2002

6.5

1998

6.1

2008

6.5

2009

6.0

2007

4.5

2002

6.1

1978

6.3

1994

7.3

1995

7.3

1993

4.5

2014

6.3

1994

0.0