Question: Cheburashka is voiced by a Soviet and Russian actress and singer who was active from 1951 until what year?

Context paragraphs:
Natalya Bondarchuk: Natalya Sergeyevna Bondarchuk (Russian: Наталья Серге́евна Бондарчук ) (born May 10, 1950) is a Soviet and Russian actress and film director, best known for her appearance in Andrei Tarkovsky's "Solaris" as "Hari".  She is the daughter of the Ukrainian director and actor Sergei Bondarchuk and the Russian actress Inna Makarova.  Her half-brother is the film director and actor Fedor Bondarchuk; her half-sister is the actress Yelena Bondarchuk.

Cheburashka Goes to School: Cheburashka Goes to School (Russian: Чебурашка идёт в школу, Cheburashka Idet v Shkolu ) is a 1983 Soviet animated film directed by Roman Kachanov.

Klara Rumyanova: Klara Mikhailovna Rumyanova (Russian: Кла́ра Миха́йловна Румя́нова ; 8 December 1929, Leningrad – 18 September 2004, Moscow) was a Soviet and Russian actress and singer.  She was active from 1951 to 1999.

Alisa Freindlich: Alisa Brunovna Freindlich (Russian: Али́са Бру́новна Фре́йндлих , born 8 December 1934 in Leningrad, Soviet Union) is a Soviet and Russian actress, People's Artist of the Soviet Union.

Gena the Crocodile (film): Gena the Crocodile (Russian: Крокодил Гена , "Krokodil Gena " ) is a 1969 Soviet/Russian stop-motion animated film directed by Roman Kachanov in Soyuzmultfilm studio.  This film introduces the characters Gena the Crocodile, Cheburashka, and the old woman Shapoklyak.  The film was based on Eduard Uspensky's stories about the characters.

Cheburashka (film): Cheburashka (Russian: Чебурашка , "Cheburashka " ) is a 1972 Soviet/Russian animated film directed by Roman Kachanov.

Irina Alfyorova: Irina Ivanovna Alfyorova PAR (Russian: Ири́на Ива́новна Алфёрова ; born 13 March 1951, Novosibirsk, Soviet Union) is a Soviet and Russian actress.  She was formerly married to Russian film and stage actor Aleksandr Abdulov, he adopted her daughter, Ksenia (from marriage to a Bulgarian diplomat Boyko Gyurov).

Natalya Belokhvostikova: Natalya Nikolayevna Belokhvostikova (Russian: Ната́лья Никола́евна Белохво́стикова , July 28, 1951, Moscow, USSR) is a retired Soviet and Russian actress.

Cheburashka: Cheburashka (Russian: Чебура́шка ; ] ), also known as Topple in earlier English translations, is a character in children's literature, from a 1966 story by Soviet writer Eduard Uspensky.  He is also the protagonist (voiced by Klara Rumyanova) of the stop-motion animated films by Roman Kachanov (Soyuzmultfilm studio), the first film of which was made in 1969.

Roman Abelevich Kachanov: Roman Abelevich Kachanov (Russian: Роман Абелевич Качанов ; 25 February 1921 – 4 July 1993) was a Soviet animator who worked primarily in the stop-motion animation technique.  He directed the popular series of films about Cheburashka based on the fairy tales written by Eduard Uspensky: "Gena the Crocodile", "Cheburashka", "Shapoklyak" and "Cheburashka Goes to School".

Supporting paragraphs: Cheburashka Klara Rumyanova
Answer: 1999