2005

6.2

2008

5.3

1996

5.8

1989

6.8

2004

6.9

1994

7.4

2021

6.0

1988

6.9

1997

6.2

1959

7.1

2004

6.4

1988

6.0

1989

6.3

2003

6.2

1990

6.9

2003

6.4

1984

7.4

2007

6.0

1978

7.4

2015

6.1