Year: 2001
top 20%: 61.71
60 - 80: 18.12
40 - 60: 10.99
20 - 40: 6.83
bottom 20%: 2.35

Year: 2002
top 20%: 62.58
60 - 80: 18.04
40 - 60: 10.35
20 - 40: 6.28
bottom 20%: 2.75

Year: 2003
top 20%: 59.25
60 - 80: 18.9
40 - 60: 11.5
20 - 40: 7.28
bottom 20%: 3.29

Year: 2004
top 20%: 60.98
60 - 80: 18.05
40 - 60: 10.85
20 - 40: 6.83
bottom 20%: 3.31

Year: 2005
top 20%: 59.97
60 - 80: 18.37
40 - 60: 11.19
20 - 40: 7.09
bottom 20%: 3.37

Year: 2006
top 20%:
60 - 80:
40 - 60:
20 - 40:
bottom 20%:

Year: 2007
top 20%:
60 - 80:
40 - 60:
20 - 40:
bottom 20%:

Year: 2008
top 20%: 60.28
60 - 80: 18.88
40 - 60: 11.19
20 - 40: 6.73
bottom 20%: 2.93

Year: 2009
top 20%: 60.26
60 - 80: 18.75
40 - 60: 11.16
20 - 40: 6.78
bottom 20%: 3.06

Year: 2010
top 20%: 60.03
60 - 80: 18.72
40 - 60: 11.16
20 - 40: 6.9
bottom 20%: 3.19

Year: 2011
top 20%: 58.7
60 - 80: 19.15
40 - 60: 11.59
20 - 40: 7.21
bottom 20%: 3.35

Year: 2012
top 20%: 57.87
60 - 80: 19.66
40 - 60: 11.9
20 - 40: 7.29
bottom 20%: 3.29

Year: 2013
top 20%: 57.97
60 - 80: 19.55
40 - 60: 11.85
20 - 40: 7.29
bottom 20%: 3.35

Year: 2014
top 20%: 58.11
60 - 80: 19.31
40 - 60: 11.84
20 - 40: 7.38
bottom 20%: 3.36

Year: 2015
top 20%: 55.9
60 - 80: 20
40 - 60: 12.5
20 - 40: 7.9
bottom 20%: 3.8

Year: 2016
top 20%: 55.7
60 - 80: 19.9
40 - 60: 12.6
20 - 40: 8
bottom 20%: 3.9