The remaining 22% were undecided on the matter.
In 2014 only 35% expressed pro-EU sentiment when asked the same question, while 34% thought that EU membership gives more bad than good. The survey wasn't carried out in 2015.
The largest perceived benefits of EU funds were environmental improvements as well as better utilities and transportation, with 57% claiming they felt improvement in these areas.
Another 32% said EU funds help boosting the Latvian economy as a whole, while 32% noted improvements to Latvia's farming industry.
The survey was carried out from August 6 to 16 and included 1,002 respondents aged 18 to 74 across Latvia.
In 2014 Latvia contributed €0.244b to the EU budget, equivalent to 1.02% of its Gross national income (GNI), and received €1.062b, which corresponds to 4.45% of its GNI.