how to suffice a Zero based on the count of values in pandas

I have a dataframe with a column year as below

Year
202
2021
2022
202
2019

I need to add "0" for all the column values which has "202"

how can I do it

Expected Output

 Year
 2020
 2021
 2022
 2020
 2019

Code so far:

df['Year_1'] = df['Year'].str.len()

>Solution :

You can multiple values by 10 for values less like 1000:

df.loc[df.Year.lt(1000), 'Year'] *= 10
print (df)
   Year
0  2020
1  2021
2  2022
3  2020
4  2019

If working with strings add 0 if strings has lengths 3:

df.Year = df.Year.astype(str)

df.loc[df['Year'].str.len().eq(3), 'Year'] += '0'
print (df)
   Year
0  2020
1  2021
2  2022
3  2020
4  2019