Steady around 500 BTC weekly for 2,000 BTC monthly (UsefulTulips gives a monthly amount but in USD, around 20millions)
This is only measured using LocalBitcoin, there are other exchanges like AIRTM, Uphold, Binance and so on, but no open data as far as I know. Most of the Localbitcoin trades are in Bolivares (BTC to BS and BS to BTC).
Here are more stats https://www.usefultulips.org/combined_VES_Page.html
I recommend reading this website, it is one of the best english websites for Venezuela news (they sometimes touch the crypto and economic situation).
Last week by a serious NGO released a survey (it is called Encovi) they concluded the average income of the Venezuela is 0.72 USD daily.
I have been posting these updates for years now! I have made some really good friends here and have received a lot of help and work (translation, doing task, so on)
Any question let me know, AMA. But check my links and sources first.
LBTC listings https://localbitcoins.com/buy-bitcoins-online/ves/