Like this:
<table rules="all" style=";border: 2px solid black;border-collapse:collapse;padding: 0.4em;background-color: #FFFFFF" cellpadding="2.5px" width="85%"><tbody><tr><td style="padding:6px">Worksheet Formulas<table rules="all" style="border: 1px solid;text-align:center;background-color: #FFFFFF;border-collapse: collapse; border-color: #A6AAB6" cellpadding="2.5px" width="100%"><thead><tr style=" background-color: #E0E0F0;color: #161120"><th width="10px">Cell</th><th style="text-align:left;padding-left:5px;">Formula</th></tr></thead><tbody><tr><th style=" background-color: #E0E0F0;color: #161120" width="10px">J1</th><td style="text-align:left">="Rows of "&YEAR(A2)-1&":"</td></tr><tr><th style=" background-color: #E0E0F0;color: #161120" width="10px">K1</th><td style="text-align:left">=COUNTA('2010'!$B:$B)</td></tr><tr><th style=" background-color: #E0E0F0;color: #161120" width="10px">C2</th><td style="text-align:left">=IF(C$1>=ROW(),SUM(INDEX('2010'!$B:$B,$K$1-C$1+ROW()):INDEX('2010'!$B:$B,$K$1)),0)+
SUM(INDEX($B:$B,MAX(ROW()-(C$1-1),1)):INDEX($B:$B,ROW()))</td></tr></tbody></table></td></tr></tbody></table>
Markmzz