2016

5.4

2004

5.6

1979

8.3

1995

7.6

1996

6.4

1984

7.2

2000

7.8

1982

6.7

1986

7.7

1981

7.4

2001

7.4

1983

7.1

2002

7.5

2007

7.4

1990

6.3

2000

6.4

1994

7.3

2000

6.8

2002

7.4

2012

6.7