BNB USDBGN excels exports Q1,Q2,Q3,Q4 of a given year

bnb_USDBGN_Q1Q2Q3Q4.sh

year=2019

curl "https://www.bnb.bg/Statistics/StExternalSector/StExchangeRates/StERForeignCurrencies/index.htm?downloadOper=true&group1=second&periodStartDays=01&periodStartMonths=01&periodStartYear=$year&periodEndDays=31&periodEndMonths=03&periodEndYear=$year&valutes=USD&search=true&showChart=false&showChartButton=true&type=MS-Excel" \
    -H 'Connection: keep-alive' \
    -H 'Upgrade-Insecure-Requests: 1' \
    -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.88 Safari/537.36' \
    -H 'Sec-Fetch-User: ?1' \
    -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9' \
    -H 'Sec-Fetch-Site: same-origin' \
    -H 'Sec-Fetch-Mode: navigate' \
    -H 'Accept-Encoding: gzip, deflate, br' \
    -H 'Accept-Language: en-US,en;q=0.9,bg;q=0.8' \
    --compressed \
    --output "$year"Q1.xls

curl "https://www.bnb.bg/Statistics/StExternalSector/StExchangeRates/StERForeignCurrencies/index.htm?downloadOper=true&group1=second&periodStartDays=01&periodStartMonths=04&periodStartYear=$year&periodEndDays=30&periodEndMonths=06&periodEndYear=$year&valutes=USD&search=true&showChart=false&showChartButton=true&type=MS-Excel" \
    -H 'Connection: keep-alive' \
    -H 'Upgrade-Insecure-Requests: 1' \
    -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.88 Safari/537.36' \
    -H 'Sec-Fetch-User: ?1' \
    -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9' \
    -H 'Sec-Fetch-Site: same-origin' \
    -H 'Sec-Fetch-Mode: navigate' \
    -H 'Accept-Encoding: gzip, deflate, br' \
    -H 'Accept-Language: en-US,en;q=0.9,bg;q=0.8' \
    --compressed \
    --output "$year"Q2.xls

curl "https://www.bnb.bg/Statistics/StExternalSector/StExchangeRates/StERForeignCurrencies/index.htm?downloadOper=true&group1=second&periodStartDays=01&periodStartMonths=07&periodStartYear=$year&periodEndDays=30&periodEndMonths=09&periodEndYear=$year&valutes=USD&search=true&showChart=false&showChartButton=true&type=MS-Excel" \
    -H 'Connection: keep-alive' \
    -H 'Upgrade-Insecure-Requests: 1' \
    -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.88 Safari/537.36' \
    -H 'Sec-Fetch-User: ?1' \
    -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9' \
    -H 'Sec-Fetch-Site: same-origin' \
    -H 'Sec-Fetch-Mode: navigate' \
    -H 'Accept-Encoding: gzip, deflate, br' \
    -H 'Accept-Language: en-US,en;q=0.9,bg;q=0.8' \
    --compressed \
    --output "$year"Q3.xls

curl "https://www.bnb.bg/Statistics/StExternalSector/StExchangeRates/StERForeignCurrencies/index.htm?downloadOper=true&group1=second&periodStartDays=01&periodStartMonths=10&periodStartYear=$year&periodEndDays=31&periodEndMonths=12&periodEndYear=$year&valutes=USD&search=true&showChart=false&showChartButton=true&type=MS-Excel" \
    -H 'Connection: keep-alive' \
    -H 'Upgrade-Insecure-Requests: 1' \
    -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.88 Safari/537.36' \
    -H 'Sec-Fetch-User: ?1' \
    -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9' \
    -H 'Sec-Fetch-Site: same-origin' \
    -H 'Sec-Fetch-Mode: navigate' \
    -H 'Accept-Encoding: gzip, deflate, br' \
    -H 'Accept-Language: en-US,en;q=0.9,bg;q=0.8' \
    --compressed \
    --output "$year"Q4.xls