I wouldn't worry about it provided that the sound is consistent.
High pressure liquid refrigerant flows to the evaporator and boils off; some systems make more noise than others.
An intermittent sound would be a cause for concern though.
economic collapse is a certainty. debt based fiat currency monetary systems can never continue indefinitely because they require continuous creation of new debt to service the existing debt. in the absence of economical growth (which is always predicated on increased resource extraction rather than capital alone), this leads to massive inflation which destroys the currency.
your leaders can't fix this - they're corrupt and only exist to enrich themselves and their corporate friends.