Extract xml tag value using awk command

I have a xml like below

<root>    
<FIToFICstmrDrctDbt>
            <GrpHdr>
                <MsgId>A</MsgId>
                <CreDtTm>2001-12-17T09:30:47</CreDtTm>
                <NbOfTxs>0</NbOfTxs>
                <TtlIntrBkSttlmAmt Ccy="EUR">0.0</TtlIntrBkSttlmAmt>
                <IntrBkSttlmDt>1967-08-13</IntrBkSttlmDt>
                <SttlmInf>
                    <SttlmMtd>CLRG</SttlmMtd>
                    <ClrSys>
                        <Prtry>xx</Prtry>
                    </ClrSys>
                </SttlmInf>
                <InstgAgt>
                    <FinInstnId>
                        <BIC>AAAAAAAAAAA</BIC>
                    </FinInstnId>
                </InstgAgt>
            </GrpHdr>
    </FIToFICstmrDrctDbt>
</root>

I need to extract the value of each tag value in separate variables using awk command. how to do it?