Read the following texts and table with financial data from an S&P 500 earnings report carefully.Based on the question-answer history (if provided), answer the last question. The answer may require mathematical calculation based on the data provided.

Text: entergy new orleans , inc . management's financial discussion and analysis net revenue 2008 compared to 2007 net revenue consists of operating revenues net of : 1 ) fuel , fuel-related expenses , and gas purchased for resale , 2 ) purchased power expenses , and 3 ) other regulatory charges . following is an analysis of the change in net revenue comparing 2008 to 2007 . amount ( in millions ) . <table class='wikitable'><tr><td>1</td><td>-</td><td>amount ( in millions )</td></tr><tr><td>2</td><td>2007 net revenue</td><td>$ 231.0</td></tr><tr><td>3</td><td>volume/weather</td><td>15.5</td></tr><tr><td>4</td><td>net gas revenue</td><td>6.6</td></tr><tr><td>5</td><td>rider revenue</td><td>3.9</td></tr><tr><td>6</td><td>base revenue</td><td>-11.3 ( 11.3 )</td></tr><tr><td>7</td><td>other</td><td>7.0</td></tr><tr><td>8</td><td>2008 net revenue</td><td>$ 252.7</td></tr></table> the volume/weather variance is due to an increase in electricity usage in the service territory in 2008 compared to the same period in 2007 . entergy new orleans estimates that approximately 141000 electric customers and 93000 gas customers have returned since hurricane katrina and are taking service as of december 31 , 2008 , compared to approximately 132000 electric customers and 86000 gas customers as of december 31 , 2007 . billed retail electricity usage increased a total of 184 gwh compared to the same period in 2007 , an increase of 4% ( 4 % ) . the net gas revenue variance is primarily due to an increase in base rates in march and november 2007 . refer to note 2 to the financial statements for a discussion of the base rate increase . the rider revenue variance is due primarily to higher total revenue and a storm reserve rider effective march 2007 as a result of the city council's approval of a settlement agreement in october 2006 . the approved storm reserve has been set to collect $ 75 million over a ten-year period through the rider and the funds will be held in a restricted escrow account . the settlement agreement is discussed in note 2 to the financial statements . the base revenue variance is primarily due to a base rate recovery credit , effective january 2008 . the base rate credit is discussed in note 2 to the financial statements . gross operating revenues and fuel and purchased power expenses gross operating revenues increased primarily due to : an increase of $ 58.9 million in gross wholesale revenue due to increased sales to affiliated customers and an increase in the average price of energy available for resale sales ; an increase of $ 47.7 million in electric fuel cost recovery revenues due to higher fuel rates and increased electricity usage ; and an increase of $ 22 million in gross gas revenues due to higher fuel recovery revenues and increases in gas base rates in march 2007 and november 2007 . fuel and purchased power increased primarily due to increases in the average market prices of natural gas and purchased power in addition to an increase in demand. .
Question: what was the number of gas customers in 2008?
Answer: 93000.0
Question: and what was it in 2007?

user
86000.0
assistant