|Year|Order|Quantity|GER Nos.|
|---|---|---|---|
|1893|N31|1|999|
|1893|H33|10|979–988|
|1894|L33|10|989–998|
|1894|E34|10|969–978|
|1896|N37|10|959–968|
|1897|H40|10|949–958|
|1897|O41|10|602–608, 946–948|
|1898|G42|10|542–551|
|1898|K43|10|562–571|

Question: how many years are listed?
Answer: 5