south america . approximately 26% ( 26 % ) of 2017 net sales were to international markets . this segment sells directly through its own sales force and indirectly through independent manufacturers 2019 representatives , primarily to wholesalers , home centers , mass merchandisers and industrial distributors . in aggregate , sales to the home depot and lowe 2019s comprised approximately 23% ( 23 % ) of net sales of the plumbing segment in 2017 . this segment 2019s chief competitors include delta ( owned by masco ) , kohler , pfister ( owned by spectrum brands ) , american standard ( owned by lixil group ) , insinkerator ( owned by emerson electronic company ) and imported private-label brands . doors . our doors segment manufactures and sells fiberglass and steel entry door systems under the therma-tru brand and urethane millwork product lines under the fypon brand . this segment benefits from the long-term trend away from traditional materials , such as wood , steel and aluminum , toward more energy-efficient and durable synthetic materials . therma-tru products include fiberglass and steel residential entry door and patio door systems , primarily for sale in the u.s . and canada . this segment 2019s principal customers are home centers , millwork building products and wholesale distributors , and specialty dealers that provide products to the residential new construction market , as well as to the remodeling and renovation markets . in aggregate , sales to the home depot and lowe 2019s comprised approximately 14% ( 14 % ) of net sales of the doors segment in 2017 . this segment 2019s competitors include masonite , jeld-wen , plastpro and pella . security . our security segment 2019s products consist of locks , safety and security devices , and electronic security products manufactured , sourced and distributed primarily under the master lock brand and fire resistant safes , security containers and commercial cabinets manufactured , sourced and distributed under the sentrysafe brand . this segment sells products principally in the u.s. , canada , europe , central america , japan and australia . approximately 25% ( 25 % ) of 2017 net sales were to international markets . this segment manufactures and sells key-controlled and combination padlocks , bicycle and cable locks , built-in locker locks , door hardware , automotive , trailer and towing locks , electronic access control solutions , and other specialty safety and security devices for consumer use to hardware , home center and other retail outlets . in addition , the segment sells lock systems and fire resistant safes to locksmiths , industrial and institutional users , and original equipment manufacturers . in aggregate , sales to the home depot and lowe 2019s comprised approximately 18% ( 18 % ) of the net sales of the security segment in 2017 . master lock competes with abus , w.h . brady , hampton , kwikset ( owned by spectrum brands ) , schlage ( owned by allegion ) , assa abloy and various imports , and sentrysafe competes with first alert , magnum , fortress , stack-on and fire king . annual net sales for each of the last three fiscal years for each of our business segments were as follows : ( in millions ) 2017 2016 2015 .

2017: cabinets: 2467.1
plumbing: 1720.8
doors: 502.9
security: 592.5
total: 5283.3
2016: cabinets: 2397.8
plumbing: 1534.4
doors: 473
security: 579.7
total: 4984.9
2015: cabinets: 2173.4
plumbing: 1414.5
doors: 439.1
security: 552.4
total: 4579.4

for additional financial information for each of our business segments , refer to note 18 , 201cinformation on business segments , 201d to the consolidated financial statements in item 8 of this annual report on form other information raw materials . the table below indicates the principal raw materials used by each of our segments . these materials are available from a number of sources . volatility in the prices of commodities and energy used in making and distributing our products impacts the cost of manufacturing our products. .

Questions:
in the year of 2017, what percentage of the net sales were for international markets?
and what were those net sales?
what, then, was the amount correspondent to that percentage?
and from 2016 to that year, what was the increase in the sales of cabinets?
what percentage did this increase represent in relation to those sales in 2016?

Answers:
25%
5283.3
1320.8
69.3
2.9%