hologic , inc .notes to consolidated financial statements 2014 ( continued ) ( in thousands , except per share data ) future minimum lease payments under all the company 2019s operating leases are approximately as follows: . fiscal years ending                                        | amount 
september 24 2005                                          | $ 4848 
september 30 2006                                          | 4672   
september 29 2007                                          | 3680   
september 27 2008                                          | 3237   
september 26 2009                                          | 3158   
thereafter                                                 | 40764  
total ( not reduced by minimum sublease rentals of $ 165 ) | $ 60359 the company subleases a portion of its bedford facility and has received rental income of $ 277 , $ 410 and $ 682 for fiscal years 2004 , 2003 and 2002 , respectively , which has been recorded as an offset to rent expense in the accompanying statements of income .rental expense , net of sublease income , was approximately $ 4660 , $ 4963 , and $ 2462 for fiscal 2004 , 2003 and 2002 , respectively .9 .business segments and geographic information the company reports segment information in accordance with sfas no .131 , disclosures about segments of an enterprise and related information .operating segments are identified as components of an enterprise about which separate , discrete financial information is available for evaluation by the chief operating decision maker , or decision-making group , in making decisions how to allocate resources and assess performance .the company 2019s chief decision-maker , as defined under sfas no .131 , is the chief executive officer .to date , the company has viewed its operations and manages its business as four principal operating segments : the manufacture and sale of mammography products , osteoporosis assessment products , digital detectors and other products .as a result of the company 2019s implementation of a company wide integrated software application in fiscal 2003 , identifiable assets for the four principal operating segments only consist of inventories , intangible assets , and property and equipment .the company has presented all other assets as corporate assets .prior periods have been restated to conform to this presentation .intersegment sales and transfers are not significant. .
Question: what was the rental expense in 2003?
Steps: Ask for number 4963
Answer: 4963.0
Question: and what was it in 2002?

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.
hologic , inc .notes to consolidated financial statements 2014 ( continued ) ( in thousands , except per share data ) future minimum lease payments under all the company 2019s operating leases are approximately as follows: . fiscal years ending                                        | amount 
september 24 2005                                          | $ 4848 
september 30 2006                                          | 4672   
september 29 2007                                          | 3680   
september 27 2008                                          | 3237   
september 26 2009                                          | 3158   
thereafter                                                 | 40764  
total ( not reduced by minimum sublease rentals of $ 165 ) | $ 60359 the company subleases a portion of its bedford facility and has received rental income of $ 277 , $ 410 and $ 682 for fiscal years 2004 , 2003 and 2002 , respectively , which has been recorded as an offset to rent expense in the accompanying statements of income .rental expense , net of sublease income , was approximately $ 4660 , $ 4963 , and $ 2462 for fiscal 2004 , 2003 and 2002 , respectively .9 .business segments and geographic information the company reports segment information in accordance with sfas no .131 , disclosures about segments of an enterprise and related information .operating segments are identified as components of an enterprise about which separate , discrete financial information is available for evaluation by the chief operating decision maker , or decision-making group , in making decisions how to allocate resources and assess performance .the company 2019s chief decision-maker , as defined under sfas no .131 , is the chief executive officer .to date , the company has viewed its operations and manages its business as four principal operating segments : the manufacture and sale of mammography products , osteoporosis assessment products , digital detectors and other products .as a result of the company 2019s implementation of a company wide integrated software application in fiscal 2003 , identifiable assets for the four principal operating segments only consist of inventories , intangible assets , and property and equipment .the company has presented all other assets as corporate assets .prior periods have been restated to conform to this presentation .intersegment sales and transfers are not significant. .
Question: what was the rental expense in 2003?
Steps: Ask for number 4963
Answer: 4963.0
Question: and what was it in 2002?
