not sure how you do those cool charts, but I got this information on sales info on wikipedia. Seems like hybrid sales in the US have gone up and down like a yoyo.
Toyota set a Highlander sales record in the US in 2017, selling 215,775 Highlanders.
Calendar year /
US total sales /
US hybrid sales[50]
2000 / n/a n/a
2001 / 86,700 n/a
2002 / 113,134 n/a
2003 / 120,174 n/a
2004 / 133,077 n/a
2005 / 137,409 17,989
2006 / 129,794 31,485
2007 / 127,878 22,052
2008 / 104,661 19,441
2009 / 83,118 11,086
2010 / 92,121 7,456
2011 / 101,252 4,549
2012 / 121,055 5,921
2013 / 127,572 5,070
2014 / 146,127 3,621
2015 / 158,915 4,015
2016 / 191,379 5,976
2017 / 215,775 16,864