Each random number is bigger than the previous [closed]

I am generating fake values amongst text as string.

I want to have this example output string:

2014_123.23 2015_456.40 2016_789.01 2017_1011.32

Where:

• prefix for each sub-string, separated by a space ' ', is are years 2014 to 2021.
• postfix for each sub-string is a 2-decimal place number, bigger than the previous.

Each postfix value has to be bigger than the previous sub-string's postfix value

So far, I have:

import numpy
import random

def year_tons(year_min, year_max):
    v = [str(year) + '_' + str(round(random.uniform(100.00, 500.99), 2)) for year in range(year_min, year_max+1)]
    v = " ".join(v)
    print(v)

year_tons(2014, 2021)

Output:

2014_103.55 2015_468.8 2016_162.36 2017_363.14 2018_404.73 2019_424.0 2020_449.43 2021_147.34