Year	Percent
1950	10.54974
1955	10.91661
1960	11.16109
1965	11.44411
1970	9.45276
1975	9.58405
1980	12.06761
1985	11.21207
1990	10.49471
1995	11.11868
2000	10.64339
2005	11.93773
2010	11.07982
2015	10.53589
2020	9.89739
2025	9.02061
2030	8.70982
2035	8.4037
2040	8.12533
2045	7.79531
2050	7.41194
2055	7.04825
2060	6.77257
2065	6.60197
2070	6.49547
2075	6.41226
2080	6.31328
2085	6.22024
2090	6.12767
2095	6.07871
2100	6.05087