entergy corporation and subsidiaries management's financial discussion and analysis the decrease in interest income in 2002 was primarily due to : fffd interest recognized in 2001 on grand gulf 1's decommissioning trust funds resulting from the final order addressing system energy's rate proceeding ; fffd interest recognized in 2001 at entergy mississippi and entergy new orleans on the deferred system energy costs that were not being recovered through rates ; and fffd lower interest earned on declining deferred fuel balances . the decrease in interest charges in 2002 is primarily due to : fffd a decrease of $ 31.9 million in interest on long-term debt primarily due to the retirement of long-term debt in late 2001 and early 2002 ; and fffd a decrease of $ 76.0 million in other interest expense primarily due to interest recorded on system energy's reserve for rate refund in 2001 . the refund was made in december 2001 . 2001 compared to 2000 results for the year ended december 31 , 2001 for u.s . utility were also affected by an increase in interest charges of $ 61.5 million primarily due to : fffd the final ferc order addressing the 1995 system energy rate filing ; fffd debt issued at entergy arkansas in july 2001 , at entergy gulf states in june 2000 and august 2001 , at entergy mississippi in january 2001 , and at entergy new orleans in july 2000 and february 2001 ; and fffd borrowings under credit facilities during 2001 , primarily at entergy arkansas . non-utility nuclear the increase in earnings in 2002 for non-utility nuclear from $ 128 million to $ 201 million was primarily due to the operation of indian point 2 and vermont yankee , which were purchased in september 2001 and july 2002 , respectively . the increase in earnings in 2001 for non-utility nuclear from $ 49 million to $ 128 million was primarily due to the operation of fitzpatrick and indian point 3 for a full year , as each was purchased in november 2000 , and the operation of indian point 2 , which was purchased in september 2001 . following are key performance measures for non-utility nuclear: .

2002: net mw in operation at december 31: 3955
generation in gwh for the year: 29953
capacity factor for the year: -93
2001: net mw in operation at december 31: 3445
generation in gwh for the year: 22614
capacity factor for the year: -93
2000: net mw in operation at december 31: 2475
generation in gwh for the year: 7171
capacity factor for the year: -94

2002 compared to 2001 the following fluctuations in the results of operations for non-utility nuclear in 2002 were primarily caused by the acquisitions of indian point 2 and vermont yankee ( except as otherwise noted ) : fffd operating revenues increased $ 411.0 million to $ 1.2 billion ; fffd other operation and maintenance expenses increased $ 201.8 million to $ 596.3 million ; fffd depreciation and amortization expenses increased $ 25.1 million to $ 42.8 million ; fffd fuel expenses increased $ 29.4 million to $ 105.2 million ; fffd nuclear refueling outage expenses increased $ 23.9 million to $ 46.8 million , which was due primarily to a .

Questions:
what was the total of non-utility nuclear earnings by the end of 2002?
and what was it by the beginning of that year?
throughout the year, then, by how much did it increase?
and what was this increase as a percent of the beginning of the year total?
and in this same year of 2002, how much did the net mw in operation represent in relation to the generation in gwh?

Answers:
201
128
73
57%
13.2%