2016

7.3

1971

7.2

2007

3.9

2004

6.2

1999

5.8

1993

6.0

1980

7.3

1999

7.1

1987

6.8

2019

7.0

2003

7.3

1989

4.0

1979

4.0

1993

6.6

1996

5.5

2000

5.5

2003

5.6

2008

4.1

2000

4.3

1974

7.9