2021

6.8

1970

5.6

1995

6.3

2000

6.0

1925

6.9

2006

6.7

2003

7.2

1999

6.6

2007

7.2

1998

7.4

1992

6.6

1983

7.4

1981

7.3

1995

7.3

2002

6.6

1997

6.2

2016

6.1

1988

5.0

1997

6.3

1984

6.8