I doubt you qualify for any partial exclusion.
you waited about 7 years to sell
reg 1.121-3 lists some factors that are taken into account in determining whether the sale qualifies for a partial exclusion
Factors that may be relevant in determining the taxpayer's primary reason for the sale or exchange include (but are not limited to) the extent to which -
(1) The sale or exchange and the circumstances giving rise to the sale or exchange are proximate in time;
(2) The suitability of the property as the taxpayer's principal residence materially changes;
(3) The taxpayer's financial ability to maintain the property is materially impaired;
(4) The taxpayer uses the property as the taxpayer's residence during the period of the taxpayer's ownership of the property;
(5) The circumstances giving rise to the sale or exchange are not reasonably foreseeable when the taxpayer begins using the property as the taxpayer's principal residence; and
(6) The circumstances giving rise to the sale or exchange occur during the period of the taxpayer's ownership and use of the property as the taxpayer's principal residence.
