Year	Percent
1950	14.51896
1955	15.35436
1960	14.81658
1965	17.18756
1970	17.32052
1975	12.33078
1980	12.81789
1985	11.1634
1990	12.95541
1995	13.6282
2000	11.22876
2005	9.6844
2010	8.40397
2015	8.66217
2020	8.7399
2025	8.30616
2030	7.40894
2035	6.49595
2040	5.98587
2045	5.86479
2050	5.79304
2055	5.55337
2060	5.17255
2065	4.80295
2070	4.60924
2075	4.60755
2080	4.65561
2085	4.6346
2090	4.51037
2095	4.35817
2100	4.26808