Total gross Sales for Top 50 Glaziers 2010-2020 Above: Total gross Sales for Top 50 Glaziers, 2010-2020 (in billions), shows a decline from $3.8 billion in total sales in 2019 to $3.1 billion in 2020 Top Glaziers Struggle with Decreased Sales Last year’s Top 50 Glaziers Report saw glazing companies grappling with the first months of the pandemic. This year, glazing companies report diminished sales for 2020, falling from $3.8 billion in total sales in 2019 to $3.1 billion in 2020. Fifty-three percent of reporting companies posted 2020 sales that were lower than 2019, compared to 40.4 percent of companies in 2019. Despite sales decreases, companies’ backlogs show some health, as a majority, 65 percent, reported having a backlog of a year or more.