I'm trying to make a table but it dose not appear can anyone help me?

print(' welcome to the retirement planning tool!')

amount = int(input(' Enter annual savings ( at least $100) : $ '))

while amount < 100:

amount = int(input('the savings must be $ or bigger. Try again: '))

print(' Retirement savings Table: ')

print('n Starting Assumed Inerest Rate ')

print('n Age 4% 6% 8% 10% ')

for amount in range(amount +1):

for percentage in range(4, 2, 11):

step = 2

percentage = float(percentage) / 100

percentage += 1

balance = 0

balance += amount

balance *= percentage

for years in range(20, 66):

years = 70 - age

age = 0

print(format(years, ',.0f'), + format(balance, '10.2f'))

print(' when are YOU going to start saving for retirement? ')