Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Year | Original title | English title | Role | Notes |
| --- | --- | --- | --- | --- |
| 1955 | Ordet | The Word | Morten Borgen | directed by Carl Th. Dreyer |
| 1942 | Med forenede kræfter |  |  | Propaganda film |
| 1938 | Bolettes brudefærd |  | Carpenter Kristiansen | based on Malberg's play |
| 1938 | Kongen bød |  | Jeppe |  |
| 1937 | Kloge Mand, Den | The Clever Man | Shoemaker |  |
| 1936 | Sol over Danmark | Sun Over Denmark | Pastor Nicolaj Jacobsen |  |
| 1933 | Kobberbryllup |  | Handelsgartner Johansen |  |
| 1932 | Paustians Uhr | Paustian's Clock | Mayor |  |
| 1931 | Præsten i Vejlby | The Vicar of Vejlby | Præsten Søren Quist | First Danish sound film |
| 1930 | Hr. Tell og søn | William Tell and Son | Uncle Jokum | Fy & Bi Film |
| 1929 | Højt paa en Kvist |  |  | Fy & Bi Film |
| 1925 | Grønkøbings glade gavtyve | Pat and Patachon are Millionaires | Bank director | Fy & Bi Film |
| 1924 | Der Mann um Mitternacht | The Man at Midnight | Knut Hammerdal |  |
| 1921 | Det Største i Verden | Love that Lives | Thomas Ward | directed by Holger-Madsen |
| 1920 | Gudernes yndling | The Penalty of Fame | Pommel |  |
| 1919 | Krigsmillionæren | The Parvenu | Jensen | directed by Emanuel Gregers |
| 1916 | Udenfor loven | Outside the Law | Brown |  |
| 1914 | Tre indvendige Jomfruer | Three Maidens |  |  |
| 1914 | Lejla | Lejla | Horse trainer |  |
| 1913 | Lille Klaus og store Klaus |  | Lille Klaus |  |
| 1910 | Dorian Grays Portræt | The Picture of Dorian Gray |  |  |
Question:
how many years had passed from malberg's first film to the first danish film with sound?
Answer:
21