Construct a SQL query to determine the total number of customers in each country.
```SQL
SELECT country, COUNT(*) AS total_customers
FROM customers
GROUP BY country
ORDER BY total_customers DESC;
```
Complete the following task based on the instruction and optional input provided.### Instruction:
Construct a SQL query to determine the total number of customers in each country.

### Output:
```SQL
SELECT country, COUNT(*) AS total_customers
FROM customers
GROUP BY country
ORDER BY total_customers DESC;
```