pre_text: Our net sales by offering category for North America for 2019 and 2018, were as follows (dollars
  in thousands): Net sales in North America increased 12%, or $661.3 million, in 2019 compared to 2018. This increase reflects the addition of PCM, which reported $716.1 million in net sales in 2019, partially offset by a decline in net sales of the core business of $51.3 million. Net sales of hardware, software and services increased 10%, 14% and 25%, respectively, year over year.
table: North America
table: SalesMix 2019 2018 %Change
table: Hardware $3,957,507 $3,610,356 10%
table: Software 1,269,983 1,112,715 14%
table: Services 796,815 639,910 25%
table: $6,024,305 $5,362,981 12%
question: Analyse this data from a financial earnings document. What is the average Sales Mix of Hardware for 2018 and 2019?