I need to insert a row above a subtotal row
[=SUBTOTAL(9,C$1:INDIRECT(CELL("address",OFFSET(C11 ,-1,0))))]

rows 1 - 10 contain data
row 11 = subtotal row 1-10
rows 12 - 15 contain data
row 16 = subtotal 1-15 (Grand Totals)

I need a macro that will insert a row above row 11 - which then becomes row
12 & then repeat as needed ie always insert a row above the subtotal row.