what is the total number of models covered in the table?
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col : year | manufacturer | model | length (feet) | quantity | fleet series | fuel propulsion | powertrain row 1 : 1996 | new flyer | d60 | 60 (articulated) | 30 | 1901-1930* | diesel | detroit diesel series 50\nallison b400r row 2 : 1998 | nabi | 416 | 40 | 133 | 3001-3067, 3101-3166* | diesel | cummins m11e\nallison b400r row 3 : 1999 | nabi | 40-lfw | 40 | 44 | 4001-4044 | diesel |  row 4 : 2000 | nabi | 40-lfw | 40 | 23 | 7201-7223 | diesel | cummins ism\nallison b400r row 5 : 2000 | mci | d4500 | 45 | 30 | 6001-6030 | diesel |  row 6 : 2001 | mci | d4500 | 45 | 10 | 6031-6040 | diesel |  row 7 : 2003 | mci | d4500 | 45 | 39 | 6041-6079 | diesel |  row 8 : 2003 | nabi | 40-lfw | 40 | 46 | 4051-4090 | diesel | cummins isl\nallison b400r row 9 : 2003 | van hool | a330 | 40 | 110 | 1001-1110 | diesel | cummins ism\nvoith d864.3e row 10 : 2003 | van hool | ag300 | 60 | 57 | 2001-2057 | diesel | cummins ism\nvoith d864.3e row 11 : 2005 | van hool | a300fc | 40 | 3 | fc1-fc3 | hydrogen |  row 12 : 2006 | van hool | a300k | 30 | 50 | 5001-5050 | diesel | cummins isb\nvoith d864.3e row 13 : 2007 | van hool | ag300 | 60 | 10 | 2101-2110 | diesel | cummins isl\nvoith d864.3e row 14 : 2007 | van hool | ag300 | 60 | 15 | 2151-2165 | diesel | cummins ism\nvoith d864.3e row 15 : 2008 | van hool | a300l | 40 | 27 | 1201-1227 | diesel | cummins isl\nvoith d864.5 row 16 : 2008 | van hool | a300k | 30 | 1 | 5099 | diesel-electric hybrid |  row 17 : 2008 | van hool | a300k | 30 | 39 | 5101-5139 | diesel | cummins isb\nvoith d854.5 row 18 : 2010 | van hool | ag300 | 60 | 9 | 2191-2199 | diesel | cummins isl\nvoith d864.5 row 19 : 2010 | van hool | a300l fc | 40 | 12 | fc4-fc16 | hydrogen |  row 20 : 2013 | gillig | low-floor advantage | 40 | 65 | 1301-1365 | diesel | cummins isl 280 hp \nallison b row 21 : 2013 | new flyer | xcelsior d60 | 60 | 23 | 2201-2223 | diesel | cummins isl 330 hp\nallison b400 row 22 : 2013 | gillig | low-floor advantage | 40 | 55 | 6101-6155 | diesel | cummins isl 280 hp\nallison b400
what is the total number of models covered in the table?
Year Manufacturer Model Length (feet) Quantity Fleet Series Fuel Propulsion Powertrain
1996 New Flyer D60 60 (articulated) 30 1901-1930* Diesel Detroit Diesel Series 50\nAllison B400R
1998 NABI 416 40 133 3001-3067, 3101-3166* Diesel Cummins M11E\nAllison B400R
1999 NABI 40-LFW 40 44 4001-4044 Diesel
2000 NABI 40-LFW 40 23 7201-7223 Diesel Cummins ISM\nAllison B400R
2000 MCI D4500 45 30 6001-6030 Diesel
2001 MCI D4500 45 10 6031-6040 Diesel
2003 MCI D4500 45 39 6041-6079 Diesel
2003 NABI 40-LFW 40 46 4051-4090 Diesel Cummins ISL\nAllison B400R
2003 Van Hool A330 40 110 1001-1110 Diesel Cummins ISM\nVoith D864.3E
2003 Van Hool AG300 60 57 2001-2057 Diesel Cummins ISM\nVoith D864.3E
2005 Van Hool A300FC 40 3 FC1-FC3 Hydrogen
2006 Van Hool A300K 30 50 5001-5050 Diesel Cummins ISB\nVoith D864.3E
2007 Van Hool AG300 60 10 2101-2110 Diesel Cummins ISL\nVoith D864.3E
2007 Van Hool AG300 60 15 2151-2165 Diesel Cummins ISM\nVoith D864.3E
2008 Van Hool A300L 40 27 1201-1227 Diesel Cummins ISL\nVoith D864.5
2008 Van Hool A300K 30 1 5099 Diesel-electric hybrid
2008 Van Hool A300K 30 39 5101-5139 Diesel Cummins ISB\nVoith D854.5
2010 Van Hool AG300 60 9 2191-2199 Diesel Cummins ISL\nVoith D864.5
2010 Van Hool A300L FC 40 12 FC4-FC16 Hydrogen
2013 Gillig Low-floor Advantage 40 65 1301-1365 Diesel Cummins ISL 280 HP \nAllison B400 6-speed
2013 New Flyer Xcelsior D60 60 23 2201-2223 Diesel Cummins ISL 330 HP\nAllison B400 6-speed
2013 Gillig Low-floor Advantage 40 55 6101-6155 Diesel Cummins ISL 280 HP\nAllison B400 6-speed
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