1992

4.0

2013

6.1

2023

6.2

1999

6.6

2021

5.7

6.8

2012

7.5

1990

6.9

2008

5.7

2013

6.1

2010

6.4

2000

6.0

2011

5.9

2015

7.7

2021

7.8

1986

7.1

1951

7.0

2003

6.2

1979

6.0