There is a slight decrease for the earnings of Adsense in July 2016 Total = 25.15 GBP

1. helloacm.com - 13.62 GBP
2. justyy.com - 8.22 GBP
3. rot47.net - 2.17 GBP
4. steakovercooked.com - 0.72 GBP
5. codingforspeed.com - 0.38 GBP

Top 2 sites still contribute more than 80% of the total income. If a domain has earning at least 1 GBP per month, then it is ok since the overall cost per year for that domain (mainly domain registration fee) can be compensated by the adsense income.