`L` is a list of years. What is the output of the following snippet of code?
```
L = [1943, 2813, 2012, 1926,
1957, 2018, 1985, 2018,
1945, 1978, 2019, 1958,
2089, 1089, 1939, 2021]
year_1 = 1988
year_2 = 2022
for year in L:
if year < 2000:
if year > year_1:
year_1 = year
else:
if year < year_2:
year_2 = year
print(year_2 - year_1)
```