Year	Percent
1950	10.18154
1955	10.22284
1960	10.226
1965	10.22383
1970	10.48863
1975	10.8307
1980	11.04139
1985	10.99248
1990	10.8073
1995	10.20738
2000	9.5452
2005	9.15566
2010	8.71855
2015	8.53622
2020	8.14105
2025	7.91578
2030	7.7689
2035	7.36613
2040	7.04786
2045	6.78424
2050	6.53574
2055	6.29812
2060	6.08816
2065	5.8859
2070	5.69825
2075	5.53595
2080	5.40254
2085	5.27774
2090	5.16981
2095	5.07521
2100	4.99091