2021

6.6

2008

4.0

2001

6.8

1994

8.3

2008

6.7

2003

6.5

1973

7.5

2007

4.4

1997

6.5

1991

6.1

1990

5.6

1994

7.3

1992

7.2

1997

6.2

2005

6.2

1986

6.4

1984

6.8

1990

5.5

1997

6.3

1998

6.8