1999

6.8

2012

5.9

1984

7.2

2019

6.7

1988

6.5

1983

7.9

2015

6.9

1971

6.1

2021

6.1

2019

6.5

1965

6.4

2010

5.2

1994

6.2

2002

6.9

2006

6.8

2002

6.5

1980

8.4

1989

5.1

2003

6.8

1980

6.7