Considering the total expenditure for all the five years together, what is the percentage expenditure on house rent ?

Total house rent for all five years = $1050$ thousand

Total expenditure for all five years = $10500$ thousand

To find percentage expenditure on house rent:

Percentage = $\frac{\text{Total house rent}}{\text{Total expenditure}} \times 100$

= $\frac{1050}{10500} \times 100$

= $0.1 \times 100$

= $10\%$

Therefore, considering the total expenditure for all five years together, the percentage expenditure on house rent is $10\%$.