insert and update query

Question

CompanyID	Year	TurnOver	OperationalEmpStrength	MarketingEmpStrength	FinanceEmpStrength	OtherEmpStrength
2	2015	25	58	25	36	3
2	2015	25	58	25	36	3
2	2017	25	0	25	36	3
2	2016	0	0	24	0	0

 

i insert these value together using a loop(C#) and a insert query(store procedure)

 

if i want to update any of them  what is the procedure