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gathering numbers from latest data set on http://webdevdata.orgHTML 5.1 http://www.w3.org/html/wg/drafts/html/master/Have a element/attribute you would like to see the number for?
ping me on twitter @stevefaulkner
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total number of pages: 53,000# pages with feature% of pages with featuretotal instancesaverage per page (for pages including feature)*modenotes* for example only 6025 pages have a <footer>, and those 6025 pages contain on average 2.12 <footer> elements.
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abbr10731086810.13
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acronym1680.3%4442.64Obsolete
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area34726.55%316139.11
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aria-* attributes22634.26%
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article26745.1%3875514.49
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aside23334.4%83073.56
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audio620.1%1191.92
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b1942436.6%31437916.19
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big3877.3%28157.27Obsolete
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canvas930.18%4624.97
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center997519%441754.43Obsolete
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cite6481.22901613.91
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data70.01%415.86
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datalist40.01%41.00
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details70.01%7610.86
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div*4096593.75381739131.37*only 43,722 pages grepped out of 53,000 - my grep program froze probably due to millions of divs it was counting
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fieldset551010.4%125472.28
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figcaption3070.58%420213.69
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figure7331.38%1321318.03
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font986118.6%25221425.58Obsolete
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footer602511.37%127832.121
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frame3160.6%9212.91Obsolete
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h12814153%896193.18
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header597511.27%226343.791
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hgroup7201.35%Obsolete
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iframe2006237.9%561632.80
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img4905492.55%222756045.41
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input type=date700.1%1722.46
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input type=number490.09%2174.43
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input type=range5346.8
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input type=search7781.46%9801.26
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label1659731.32%903915.45
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legend13682.53%29102.13
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main200.04%2011
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map35236.65%68771.95
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meter144.00
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nav531510.02%121362.28
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output1380.62something hokey about this stat need to recheck more pages than instances??
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placeholder attribute701413.23%165292.36
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progress155.00
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role attribute37527.08%294377.8
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role=main16553.12%17131.04197.44% of pages with role=main had only 1 instance
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section41127.76%314087.64
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small33206.26%3437810.35
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table2345844.3%31325513.35
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template122.00
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time9601.8%
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video2400.45%40913.35
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