Year	Percent
1950	11.0776
1955	7.76155
1960	8.1961
1965	11.26484
1970	13.24888
1975	13.67523
1980	12.09688
1985	11.65025
1990	11.52051
1995	11.94666
2000	12.6916
2005	12.21255
2010	9.86062
2015	8.24047
2020	8.83028
2025	9.04328
2030	8.53881
2035	7.61972
2040	6.86902
2045	6.56401
2050	6.50376
2055	6.4141
2060	6.15079
2065	5.83213
2070	5.59099
2075	5.49188
2080	5.47023
2085	5.44188
2090	5.36113
2095	5.24174
2100	5.13917