New Zealand, apparently none. Thats a concern.
8133 tons
523,000,000,000 approx
UK total 310, todays spot is; $1,810.50 per kilo.
1 tonne = 1k Kilo, so 310,000 * 1,810.50 = $561,255,000
14679250 dollars = 0.25 tons of gold
The U.S. has 8133 Metric Tons of gold
286,883,132.5 ounces of gold
x
$1833.20 per ounce of gold
USA: Gold 8133 Tonnes = USD 525,914,158,499.00
6 tons -> 192,000 ounces -> @USD 1,841.90 per ounce -> USD 352,644,800
8.87 tons -> 283,840 ounces -> @USD 1,841.90 per ounce -> USD 522,804,896
ounce = 1834.05USD
13,439,918,400USD
United Kingdom Total Gold Reserves (Sep/20): 310t (Tonnes)
Price of Gold per kg* (03.12.20 / 21:50) = £44 014
Price/t = Price/kg x 1000
Price/t = £44 014 x 1000
Price/t = £44 014 000
Total current value (£) = Total Gold Reserves (t) x Price/t
Total current value (£) = 310 x £44 014 000
Total current value (£) = £13 644 340 000
Total current value ($) = $18,350,873,216.96
*source: gold.co.uk
OMGG!!! I am blown away, my country is screwed! 
Canada, Gold Reserves 0 t, USD value $0 
Australia
80 tonnes
3680 million usd
UK 310 tonnes of gold at todays price is $183,318,097.00
Portugal, 383 tonnes, 22 637 387 350 usd
8133 tons
$378,184,000,000
The current number of tonnes of Gold in the United States is 8133 and at a price of 1839.30 I calculated the total value in USD with the following equation:
(8133 tonnes x 32150.70 oz/tonne) x $1839.30/oz = $480,943,186,153.83
Mexico - 120 TONNES / $7,081,388,400 USD
Singapore with 127 tonnes. At current value of $1800 per oz, it’s approximately USD $7.49 billion
227 tonnes gold is are belgium reserves
Price for 1kg gold today is $59,118.34
So belgians gold reserves are worth 1.341.986.318 USD
668 Tonnes and 5,98,10,000 USD.
LT 5.8 tones 342,273,660 usd
According to tradingeconomics.com, Canada holds no gold reserves in its central bank. That’s 0 USD. Canada sold off it’s last amount of gold reserves in 2016.