I'd love to know which year these Olympic-themed face masks were from.

Olympic Dust Masks

I'd love to know which year these Olympic-themed face masks were from.
Credit
Toby J
Taken
13/08/2017
Camera
Nikon D7100
ISO
1250
Shutter
160 second
Aperture
ƒ/4
Focal Length
19mm
Lens
Nikon AF-S DX NIKKOR 16-85mm f/3.5-5.6G ED VR
License
CC BY-NC 4.0
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Zhenchang Plywood Factory 振昌木業公司合板廠