| 2020 | ||
|
January February March April |
May June |
|
| 2019 | ||
|
January-Shutdown February March April |
May June July August |
September October November December |
| 2018 | ||
|
January February March April |
May June July August |
September October November December |
| 2017 | ||
|
January February March April |
May June July August |
September October November December |
| 2016 | ||
|
January February March April |
May June July August |
September October November December |
| 2015 | ||
|
January February March April |
May June July August |
September October November December |
| 2014 | ||
|
June July August |
September October November December |
|
